|“||I never had a graduation, a prom or, you know, a life. But you did. You have everything, and it's not because you're a good little girl who deserves happiness, it's because you stole mine!||”|
Katerina Petrova (Bulgarian: Катерина Петрова; English: Katherine Pierce) is one of the main characters of The Vampire Diaries. She was the main antagonist of Season One (through John Gilbert's and Isobel's actions, as both were working for her), and one of the major antagonists of Season Two. She was also a recurring character in the third and fourth seasons.
After giving birth to a baby girl deemed "illegitimate" and being separated from her, she was banished off to England, where she met Niklaus Mikaelson and Elijah Mikaelson. At first, she was attracted to the two brothers. However, after finding out that Klaus planned on using her as a sacrifice in order to break the curse that had been placed on him (as she was Tatia's Doppelgänger as a human), she sabotaged his plan by turning herself into a vampire, stealing the moonstone, which Klaus needed in order to break the curse, and then running away. After that, she ran from him for over five centuries.
Her activities during her first centuries as a vampire are unknown, but at some point between the 15th and 19th centuries, she met and befriended Pearl, Anna, and Emily Bennett. In the late 19th century, she traveled to Mystic Falls, where she met Stefan and Damon Salvatore and subsequently turned them both into vampires after falling in love with them. When the Town Council found out that vampires were in the town, she faked her death and escaped with the help of George Lockwood in exchange for the moonstone.
During the 20th century, she watched over Stefan while still hiding from Klaus. In 2010, she came back to Mystic Falls with the intention of finally earning her freedom from him. To that end, she turned Caroline Forbes into a vampire, and Mason Lockwood into a werewolf. She escaped Mystic Falls again shortly after coming back, when the Original family came back to the town as well.
After failing to induce Klaus' forgiveness by securing the cure and handing it over to Elijah, Katherine managed to draw Klaus away from Mystic Falls by revealing to him in a letter that a witch in New Orleans named Jane-Anne Deveraux was plotting against him. Now that he is gone, she is officially back in Mystic Falls.
In Graduation, Katherine gets into a violent fight with Elena. As she is about to rip her descendant Doppelgänger's heart out of her chest, the latter forces the cure down the former's throat, making her fall unconscious. It seems that Katherine is now human again, after being a vampire for over five centuries.
Katherine is the descendant of Tatia, and the maternal ancestor of Isobel Flemming and her daughter, Elena Gilbert. She was once the romantic interest of Stefan and Damon Salvatore. Since the late 15th century, she has also been the romantic interest of Elijah, with whom she was involved until he effectively ended their relationship by leaving to join his half-brother in New Orleans.
Katerina is a member of the Petrova Family.
Katerina Petrova (Cyrillic Катерина Петрова) was born into a wealthy Bulgarian family on June 5th 1473. In 1490, when she was about 16 or 17 years of age, Katerina became pregnant by an unknown man, and her family disowned her for the shameful birth of an illegitimate daughter. She carried the child to term, but seconds after her daughter's birth, Katerina's father took the child away, claiming it would be better for both of them to never see one another. Katerina was devastated by this and was banished to England, where she quickly adjusted by becoming English. In 1492, she met Trevor, who introduced her to Lord Elijah, who in turn introduced her to his younger brother, Lord Niklaus. Katerina was attracted to Klaus, until she found out what he was, and that he was planning on using her as a sacrifice to break the The Hybrid Curse placed on him. She escaped with the help of Trevor, who had fallen in love with her. He led her pursuers astray and told her to go east, to a cottage in the woods where she would be safe. When she arrived at a cottage, Katerina met a vampire named Rose.
When Rose found out that Katerina had escaped from Klaus with the moonstone, she locked her in a room and told her that she would take her to Klaus as soon as the opportunity arose. Katerina tried to commit suicide by stabbing herself with a knife, saying she would rather die than go back to Klaus, but Rose force-fed her some of her blood to heal her. When Rose turned her back to confront Trevor, Katerina hung herself with a length of rope. Later, when Katerina woke up in transition, Trevor asked why she did it and claimed he would have helped her live. Katerina responds by saying that he would have been able to help her run and that running was never going to be enough. Rose then explains to Trevor that Katerina used him to escape and, knowing Klaus would find out their role in the escape, Rose attempted to kill Katerina with a stake. Katerina used the owner of the cabin as a shield, which resulted in her death. Katerina then gave in to her instincts and drained the little old lady, completing her transition into a vampire. She then threw the body towards Rose and Trevor and fled into the night. Katerina returned to Bulgaria in the latter months of 1492 to find her entire family brutally slaughtered by Klaus. She knew he had done it as revenge for her escape and subsequent transition. She was last seen weeping over her mother's dead body.
372 years had passed when in 1864 Katerina arrived in Mystic Falls, Virginia, by which time she had taken the name Katherine Pierce, presumably to avoid detection by Klaus. At some point she had become friends with Pearl and her daughter, Anna, and she saved the life of the witch Emily Bennett, putting Emily in her debt. Emily forged her a special piece of jewelry with the stone Lapis Lazuli which allowed her to walk in the sun without being burned. She was taken in by one of the town's founders, Giuseppe Salvatore, having spun a story about being orphaned by a fire that killed her family. Katherine met and fell in love with his son Stefan Salvatore, though she quickly began a physical relationship with Stefan's older brother, Damon, as well. Katherine created quite a few vampires while living in Mystic Falls, which inevitably alerted the Founding Families to their existence. Pearl warned Katherine that the town knew about the vampires after discovering an elixir containing vervain, which Honoria Fell had asked to be sold at the apothecary. Pearl tried to convince her to leave, but Katherine refused, claiming she had a plan in motion. Her plan, it turned out, was to turn Stefan and Damon into vampires, having seduced them both during her stay at the Salvatore household.
Realizing how quickly the Founder's Council would take action against the vampires, Katherine struck a deal with George Lockwood: she would give him the moonstone if he would help her fake her death. Eventually, Stefan unwittingly suggested to his father that he knew a vampire, and Giuseppe guessed Katherine's true identity. Giuseppe spiked Stefan's drink with vervain and, later that same night, Katherine bit him. She was incapacitated by the vervain in his bloodstream, and, hearing the commotion, Giuseppe burst in to take her away. Damon later went to rescue her, and Stefan, upset that he had hurt his brother and jeopardized Katherine's life, helped him in the effort. They were both killed trying to save her, shot by their own father, Giuseppe, who was ashamed his sons had succumbed to the wiles of a demon.
Katherine and the other vampires were taken to Fell's Church to be destroyed, but George helped Katherine escape. She gave George the moonstone, but instead of leaving right away, she turned to see Damon and Stefan's bodies lying in the road. She ran to Stefan, kissed him, and promised they would be together again someday. After transitioning into a vampire, Damon was told by Emily that Katherine was trapped in the tomb beneath the church, and as a result, the older Salvatore never stopped loving Katherine as he awaited the day he would be able to rescue her. In reality, Katherine was still lying low to evade Klaus, and she kept a close eye on the younger Salvatore brother, pointing out that she had seen him in the front row of a concert in the 1980s to prove that she'd always been watching over him.
In the 1920s, Katherine was in Chicago at the same time as Stefan, but she only observed him from afar. After a police raid cleared out the speakeasy, Katherine spotted Rebekah's necklace on the ground. She moved to pick it up, but ran away before Stefan could see or notice her. She watched him for a few moments before slipping into the shadows.
During the 1970s, Katherine employed the talents of the vampire Will, who owned the music club and bar, Billy's, and ran an identity theft ring that secured new identities for vampires. Damon, who was friends with Will and helped him by killing people to steal their ID cards, unwittingly helped Katherine in her mission to remain undetected.
The Originals Series
In her early life, Katherine was a young and attractive girl who was punished by her family for having a child out of wedlock. After she was banished from Bulgaria, she relocated to England and seemed quite capable of making independent and intelligent choices. After she met Klaus, discovered that he and Elijah were vampires and that Klaus planned to sacrifice her in a ritual, she escaped them and ran for her life. On her way she even conned Rose into turning her into a vampire, securing at once the means to outrun Klaus as well as his eternal ire for thwarting his plans.
|“||We manipulate, we thirst for power, we control, we punish, but our actions are driven by one singular place deep inside. We're alone, and we hate it.||”|
— Katherine about Klaus and herself
After she had turned, she immediately fled the only vampires she knew and apparently learned to survive as one on her own. The large gap of time from her transition to her arrival in Mystic Falls is a mystery, but she likely befriended Pearl during this time. In 1864, she seduced both Damon and Stefan Salvatore, revealing to a compelled Stefan that she had big plans for the three of them to be together. Although she did develop genuine affection for both brothers, and even love for Stefan, she was also calculating and selfish, selling out the other vampires in town in order to fake her own death. Her actions both in 1492 and 1864 demonstrate an extremely well-developed sense of self-preservation, almost always at the expense of any human compassion or remorse.
In present day, Katherine remains very much the same in this respect. She returns to Mystic Falls with the goal of securing the moonstone as well as a vampire, a werewolf, and the second doppelgänger, solely for the purpose of handing them over to Klaus in exchange for amnesty. In the process, she manipulates and seduces Mason Lockwood to have him do her bidding, orchestrates the activation of both Mason's and Tyler's werewolf gene, turns Caroline into a vampire, compels Jenna to stab herself, lures Jenna out of her house to be sacrificed in Klaus' ritual, and leaves behind her a trail of other casualties, all in the name of securing her freedom. However, she redeems herself to the Salvatores, if only slightly, first by delivering the antidote to Damon's werewolf bite and later by helping in the plan to kill Mikael.
Despite her ruthlessness, it is clear that Katherine has deep, genuine feelings for Stefan. Unable to reveal herself to him without ruining the usefulness of being dead, she still observed him from afar over the years, admitting as much to Stefan in the present day. In fact, Katherine is usually at her most honest about her true feelings when she believes she is unobserved, as when she kissed an unconscious Stefan before leaving Mystic Falls, and when she looked on at him in the 1920s speakeasy.
Her relationships with other characters also sometimes reveal a crack in the "psychotic bitch" facade. Although she claims to his face that she never loved him, Damon still holds some of her affection, and she has offered him genuine help more than once. With regard to her doppelgänger, although she was willing to trade Elena's life for her freedom from Klaus, she never demonstrated any real animosity toward her. In fact she freely admitted an admiration for her descendant's tenacity, a quality she values in herself. And despite fearing Elijah nearly as much as Klaus because of her escape centuries earlier, she has since become his ally, and even seems to genuinely care about and possibly love him.
Katherine's extremely heightened sense of self-preservation has helped her develop a knack for creating elaborate plans and deceptions. Even when she takes a risk, which must be well worth it, she proceeds with caution and a means of escape in place. Thus, despite whatever feelings she has for Stefan, Damon, and now Elijah, it cannot be certain whether she would save their lives over her own, though the evidence so far suggests Katherine could not help but choose her own survival above all else.
Throughout her centuries-long life, Katherine has always been tough, feisty, independent and smart. If a task needs doing, she'll find a way to accomplish it, usually through a combination of uncompromising will and skilled manipulation of people and circumstances. Her personal motto - "Better you die than I" - does well to encapsulate her instinct for self-preservation as well as the detached cruelty which many vampires choose to adopt. But in her private moments, there is yet a glimpse of the human girl who once said that life is too cruel to live without love.
- Main article: Katherine Pierce/Appearance
The simplest way of distinguishing Katherine from Elena is in observing basic cosmetic differences: Katherine favors a curly hair style, while Elena typically wears hers straight; Katherine often pairs a sensually cut outfit with heels, while Elena is usually seen wearing comfortable, practical options like jeans, T-shirts and sneakers; and Katherine tends to wear more makeup than Elena.
However, there are subtler differences between the two that only a keener eye can detect. Katherine's eyes seem to be a shade darker than Elena's, having a smoky, shadowy appearance; where Elena's eyes are guileless, Katherine usually seems to be hiding something behind hers. Her mannerisms are more deliberate, almost as though she is performing for her audience - a skill that comes in handy when she wants to borrow the identity of the younger doppelgänger. Even her speaking voice seems harsher, more cutting than Elena's.
- Emily Bennett - She was Katherine's handmaiden in 1864 as well as a powerful witch. Katherine betrayed her when she told the people in town that Emily was a witch.
- Henry - He was a vampire who helped Katherine to investigate the werewolf attacks within the town of Mystic Falls back in 1864. Henry was staked and killed by Alaric Saltzman in the 21st century.
- George Lockwood - George was a werewolf and the co-conspirator in Katherine's faked death. She and George made a deal in which George helped her escape and told no one of it, in exchange for giving George the moonstone.
- Will - He had a business to get vampires fake identities but due to not being able to walk in the sunlight he had a deal with Damon. He gave her a fake identity back in the 70s.
- Mason Lockwood - Mason was a werewolf and a romantic partner of Katherine's in the 21st century whom she manipulated in order to obtain the moonstone. Mason was killed by Damon.
- Jimmy - He was a friend of Mason Lockwood. Katherine used her power of mind control on Jimmy and compelled him to attack Mason while accusing him of sleeping with his girlfriend, Marla. Mason accidentally killed him, which triggered the curse.
- Isobel Flemming - Isobel is Elena's biological mother and Katherine's descendant. She helped Katherine in her plan to destroy the tomb vampires and seek information about The Originals. Katherine also helped her obtain a Lapis Lazuli necklace to allow her to walk in daylight. Isobel later betrayed Katherine.
- John Gilbert - Not directly. Isobel asked John to get a device that was taken from Johnathan Gilbert in 1864. John fails to get the device, so Isobel gets it herself by trading Jeremy for it, whom she had kidnapped. She then gives it to John, who uses it to destroy the vampires that came out of the tomb. Katherine was the one to instigate the plan to kill the tomb vampires.
- Jenna Sommers - Katherine used mind control on Jenna to spy on Elena and Stefan. After Katherine learns of Mason Lockwood's death, she orders Jenna to commit suicide by stabbing herself, but she survived.
- Caroline Forbes - Katherine turned Caroline into a vampire, and continued to threaten and manipulate her to do her bidding. She ordered Caroline to keep Elena away from Stefan and occupy her for the day so that Katherine could spend time with him.
- Matt Donovan - After learning of Mason's death, Katherine uses her power of compulsion on Matt, ordering him to provoke Tyler Lockwood into killing him, in order to trigger Tyler's werewolf curse. She planned to use him along with Bonnie, Caroline and Elena to hand over to Klaus in exchange for her freedom.
- Sarah - Katherine compelled Sarah to attack Tyler if Matt failed, and when Caroline breaks up Matt and Tyler's fight, Sarah attacks Tyler and he accidentally kills her, triggering the werewolf curse.
Former Powers and Abilities
Some of these powers are more potent when the vampire gets older and feeds on human blood.
- Super Strength - Vampires are much stronger than humans and grow stronger with time. Even new vampires who are still in transition can toss a fully grown human across a room with great speed and force. Their strength is also more powerful then werewolves that are not in wolf form.
- Super Speed - Vampires can accelerate their movements to cover short distances in an instant, faster than the human eye can see. When running across long distances, they appear as vibrating blurs of motion.
- Emotional Control - The supernatural ability to control and manipulate the emotions of one's self.
- Dream Manipulation - Vampires can control dreams and subconscious. The vampires can produce and modify dreams, bestow nightmares or lucid dreaming. Other effects of this ability is the distortion of reality and trapped in the dreams.
- Heightened Senses - They can hear whispered conversations, even ones in far off buildings, smell blood, and see in total darkness.
- Mind Compulsion - Vampires have the ability to control minds, plague people's dreams, and alter/erase human memories.
- Immortality - A vampire stops aging once turned. Upon their transformation, vampires then on become immune to all conventional illness, disease, virus and infection. The only known disease or infection that can kill a vampire is a werewolf bite.
- Healing Factor - Vampires can snap their finger bones back into place after being broken and have been seen to fully recover from gunshots, stab wounds, and torso impalement.
- Lapis Lazuli - She possess a Lapis Lazuli necklace that she later turned into a bracelet that enables her to walk in daylight without being harmed.
- Vervain Immunity - After her plan was almost stopped in 1864 after ingesting vervain in Stefan's blood, Katherine started to ingest vervain every day for over 150 years, causing it to have less of an effect on her than other vampires.
Attitude Toward Humans
Based on what has been shown in the series, Katherine has no regard for human life. To her, humans are a means to an end, whether as victims to feed on or pawns in a plot for personal gain. The notable exceptions to this general disregard are Stefan and Damon Salvatore.
In 1864, Katherine took sadistic pleasure in demonstrating to a human Damon how a vampire lures in a victim by playing the role of a lost woman in order to stop a coach on a deserted road, anticipating the concern this would draw from its passengers. She fed on and killed her victims without any apparent remorse. In the present day, though she has shown no qualms about harming humans, her violence towards them is usually attended by a vague sense of purpose: she chops off John Gilbert's fingers and stabs him as she infiltrates the Gilbert home; she turns Caroline into a vampire as part of her plan to plead amnesty with Klaus; she maims and kills Aimee Bradley to emphasize how badly she wants the moonstone and compels Matt and Sarah to provoke Tyler into killing them; she knocks out Jeremy to use him to get to Mikael; she kills cemetery visitors in order to feed and awaken Mikael; and she kills various people on the island in order to get to the cure.
The only humans that Katherine, as a vampire, has seemed to not view as mere collateral damage were Damon and Stefan, whom she lived with in 1864. Although her relationships with both brothers seem to have had a certain amount of manipulation and scheming involved, Katherine demonstrated both before and immediately after Stefan's transition-death that she genuinely cared for him. Her relationship with Damon does not appear to have had the same depth of such feelings, but she cared enough about him to want to turn him into a vampire. Still, her behavior around the Salvatores was so wrapped up in whatever her ulterior motives happened to be that it's not always clear where the selfish manipulation ended and the genuine affection began.
Katherine's attitude toward vampires does not diverge far from her attitude toward humans; she merely has to be more clever in how she manipulates them. She was willing to sell out those she considers friends, like Pearl and the other vampires in Mystic Falls at the time. She regards werewolves to be little better than humans: she only deals with George Lockwood in order to procure her escape from Mystic Falls in 1864, and uses Mason and Tyler Lockwood in her plan to strike a deal with Klaus. She deals with witches with a bit more wariness, though her arrogance sometimes gets the better of her. Although she apparently lived with Emily Bennett for years and treated her as a confidante, she betrayed her during her escape from the town. Later, Lucy Bennett helps Katherine to repay a debt, but Katherine underestimates the witch's willingness to turn against her after the debt is paid.Like most vampires in the series, Katherine's attitude towards the lives of others has been significantly influenced by the end of her human life and how her vampirism affected her family. She suffered the heartache of being separated from her illegitimate daughter and disowned by her family, and not long after suffered the despair of finding her entire family dead, brutally murdered by Klaus. Any trace of the human girl who still believed in love seemed to evaporate after this last great loss, though it peeks through occasionally when it comes to Stefan.
Overall, Katherine has no respect for anyone's life but her own, and will not spare a life unless it suits her interests to do so. Although she has risked her life in the past to save Damon and Stefan, doing so was in the context of repaying a debt and killing Klaus; it remains untested whether her affection for the brothers could ever truly transcend her sense of self-preservation.
Attitude Towards Vampires
Stefan thinks Katherine is very beautiful, when she first arrives to Mystic Falls, even though he is supposed to be engaged to Rosalyn Cartwright. She and Stefan kissed in the library at the Veritas Estates for the first time. She stays in the carriage house with Emily and she killed Rosalyn out of jealousy. She acts as innocent to avoid being uncovered as a vampire. Katherine was with Damon before Stefan and compelled him to take her secret better. Stefan believed her to have died. He tells Damon that he is wasting away Katherine's gift.
- Katherine is a feminine first name of uncertain origin. It appears to come from the Greek Αικατερινη meaning "each of the two", or possibly from καθαρος (Katharos) meaning "pure". There are several famous bearers of this name, including Catherine de' Medici and Catherine the Great from Russia. The name is common in English.
- In Slavic-language countries, like Bulgaria, surnames typically take both a masculine and a feminine form. For instance, Katerina Petrova's father would have had the surname Petrov, while she and her mother had the feminine form Petrova.
- Petrov/Petroff (masculine) or Petrova (feminine) is one of the most common surnames in both Russia and Bulgaria. The surname is derived from the first name Pyotr (Пётр, Russian) or Petar (Петър, Bulgarian), both equivalent to the English name Peter. Petrov means "son of Peter" in Russian and Bulgarian.
- Pierce is a medieval form of PETER. This was the name of the main character in the 14th-century poem 'Piers Plowman' by William Langland.
- Katerina, Isobel, Rose, and Klaus are the only characters so far to have an episode named after them.
- Nina Dobrev, the actress who plays Katherine Pierce, was born in Bulgaria and speaks Bulgarian. For this reason, Katherine, who was German in the books, became Bulgarian in the series.
- In the books, Katherine von Swartzschild was a German girl who was a vampire of great beauty and kindness, but at the same time, immature, manipulative and selfish. In the TV series, Katerina Petrova, a.k.a. Katherine Pierce, was a Bulgarian girl who was also of great beauty and kindness, but also self-centered and ruthless after she became a vampire. Katherine Pierce and Katherine Von Swartzschild are both selfish, vain, sadistic and manipulative, and both faked their deaths.
- Katerina Petrova is Bulgarian, but her name and surname are Russian in origin.
- Rose was the vampire responsible for turning Katherine on the TV series. However, Klaus was the one who turned Katherine into a vampire in the novels, completely changing the back stories of Katherine and Klaus for the series. Klaus felt emotion for Katherine, so he wanted to avenge her death in the novels.
- Katherine was a "birthday gift" from Trevor to Klaus in 1492.
- In the TV series, Katherine is much older than in the books. In the books, Katherine was born in 1614 and turned in 1631, whereas in the TV series, she was born in 1473 and turned in 1492.
- Katherine's life is seriously affected by Klaus in the books and the series. In the books, Katherine Von Swartzschild becomes insane, paranoid, unstable, selfish, cruel, and sadistic because of Klaus's influence for centuries. In the series, Katherine Pierce becomes selfish, cruel, manipulative, and sadistic, because her child was taken away from her against her will, and because her family was slaughtered by Klaus.
- Katherine's parents are the first of Klaus' victims to be seen in the TV series.
- When she arrives in Mystic Falls, Katherine claims to be an orphan who lost her family in a fire. She may in fact have burned down her house with her family inside after they were murdered by Klaus, out of respect for them.
- Vanessa Monroe, a research assistant and former student of Isobel, mentions in Bad Moon Rising that Katherine arrived in Mystic Falls in April 1864, but this is inconsistent with Katherine's story that her family perished in the Atlanta campaign fires, which occurred in September of that year.
- Katherine wore a cameo lapis lazuli necklace up until the 1920s at least. This necklace is seen in all 1864 flashbacks as well as the 1920s flashback. After this she wears a different necklace, which she later begins to wear as a bracelet.
- She is the first of three women in her family to have slept with Damon Salvatore. Both of her descendants Isobel Saltzman and Elena Gilbert have also slept with him.
- Many people have fallen in love with or felt attracted to Katherine. Vampires and people like Stefan, Damon, Mason, Trevor and Elijah have been in love with her. Noah was also obsessed with her. It is thought that the Petrova doppelgangers have an uncanny ability to win others affections, especially from men, as evidenced by all of the love triangles the three Petrova women have been involved.
- Others can usually tell Katherine apart from Elena by their hair, make-up and wardrobe choices. (See Physical Appearance.)
- Katherine is quite adept at disguising herself as Elena. She has been mistaken as Elena by Jenna Sommers on many occasions, which resulted in Jenna inviting Katherine into the Gilbert's home and being lured into a trap after receiving a frantic call from "Elena".
- Katherine uses mind compulsion on Jimmy, Matt and Sarah to activate the werewolf curses in first Mason Lockwood and then Tyler Lockwood.
- Despite claiming to know all about The Originals in The House Guest, she did not know that Klaus wanted to become a hybrid, that the dagger and white oak ash would not work on him, or that the curse was fake, until after The Sun Also Rises.
- Katherine is the first vampire shown to be fed on by another vampire.
- She has been absent from Mystic Falls since Homecoming. She comes back in Pictures of You.
- She, Damon, Stefan and Caroline have all been bitten by either a werewolf or a hybrid, but were all healed with Klaus's blood.
- Katherine's remorseless behavior typically suggests that she "turns off" her humanity, but a few of her actions - delivering Klaus's blood to cure Damon, warning Stefan about how dangerous Klaus is and rescuing him from the witch Gloria, alerting Stefan to Klaus's intention to possibly kill Damon - as well as her own admission, have suggested that there are still human feelings within her, whether or not she always lets them affect her.
- It is possible Katherine knows about Tatia, as when Elena asked her in Katerina what the Petrova family has to do with the Klaus, she was familiar with the concept of creating the doppelgänger. However, she has never specifically mentioned the Original Petrova, either by name or other reference.
- She is present in Pictures of You, The Originals, She's Come Undone, The Walking Dead and Graduation, and she plays a role in Bonnie's plan to defeat Silas
- In the Season Four's finale, Elena forced the Cure down Katherine's throat.
- She is the first vampire to be cured of her vampirism.
- She is now technically the oldest living human.
- In Season Five, Katherine, now human, will be protected by one of the Salvatore brothers.
- Since Katherine is now a human, the Petrova doppelgänger bloodline might have a future.
- During her tenure as a main character in Season 2, Katherine is absent from 4 episodes: Brave New World, Rose, The Descent and Crying Wolf.
- A Day in the Limelight - has an episode named after her, plus frequent flashbacks into her origins.
- Briarpatching - Katherine uses this technique on Damon when she tells him not to dagger Elijah as she would be stuck in the tomb forever.
- Magnificant Bastard - "Plan B "