|“||Everything I did, I just wanted to help Tyler. I didn't want him to be alone.||”|
Jules was a werewolf and a former recurring character of The Vampire Diaries. Jules was also a friend of Mason Lockwood's from Florida. She came to Mystic Falls looking for Mason after his disappearance. Jules and her boyfriend, Brady, kidnapped Caroline Forbes so that they could leave with Mason's nephew, Tyler and help him adjust to his new life as a werewolf. Stefan and Damon killed several of the werewolves. The remaining werewolves were about to kill the vampires, but Jonas intervened and warned the others to leave town. They tortured Damon until Elijah appeared and killed all of them except for Jules, who escaped. She left town with Tyler, only to return after his mother's accident. When Damon freed Tyler to prevent him being used in the sacrifice, Klaus captured Jules and ripped her heart out during the sacrifice.
Next to nothing is known about Jules before she came to Mystic Falls, but she did tell Damon that she had been at it for a long time, when she sniffed out his vampire scent, indicating that she triggered her werewolf curse a long time ago.
Throughout The Vampire Diaries Series
Jules comes to visit Tyler and tells him that she’s a friend of Mason and that she’s looking for him. Tyler says Mason has gone back to Florida, but she informs that he hasn't returned. She also confronts Damon and she knows from the beginning that he’s a vampire. Damon threatens and warns her to stop looking for Mason. In By the Light of the Moon after Damon confronted her about Mason, she told Damon that he was "marked". At the Salvatore boarding house a wolf later appears bent on attacking the "marked' Damon. But Rose steps in front of Damon and is the one that gets bitten. Her bite apparently gets healed instantly but later, it is revealed that the wolf toxin is still in her shoulder.
It appears as though Jules is working with someone, as after she left the Lockwood House, she called someone to tell him that Mason had lied and that there was another werewolf: Tyler Lockwood. It is possible she was working with someone else (such as the werewolves, possibly who escaped the genocide and want revenge), it is yet to be known, but it is much awaited. It is later revealed to be the pack of werewolves that she and Mason were a part of and that she appears to lead along with her boyfriend Brady.
In The Descent, Jules shows her sociopath side more deeply: she kills an innocent ranger to cover her other murders while being a werewolf, she mocks Damon's concern with Rose and tells him to just kill her and she lies to Tyler about who killed Mason saying that Caroline did it with her vampire friends without reason even though they had a good reason to do it (he was working with Katherine and would have killed Stefan or Damon otherwise).
Jules becomes shocked when Tyler asks her about how she knows about Caroline being a vampire. She asks him, "You can't sniff them out?" She then asks him how many times he's turned into a werewolf. Also in the episode she foreshadows the come of more werewolves when she says to Tyler that they are not alone and the "others" soon will come. This is said when she tells him Caroline lied and that Mystic Falls is crawling with vampires. She assures Tyler not to worry, and says, "But don't worry. We'll get them. There are others like us. And they're on their way." She also tells Tyler, when he asks her what she wants with him, that she just wants to be his friend as Mason would have wanted that.
In Daddy Issues, she takes Caroline hostage and her boyfriend Brady tortures the vampire. She brings several werewolves to ambush the Salvatore brothers but the two vampires make quick work of their friends. Eventually the werewolves get the upper-hand until Jonas magically subdues them giving Tyler a warning to tell the werewolves to leave town while they still can. The vampires and Jonas all leave. Tyler comes into the trailer and talks to Jules and Brady. He unknowingly informs them that the moonstone is in Mystic Falls.
In Crying Wolf, Brady and Tyler leave to follow Stefan and Elena to the Gilbert Family Lake House in hopes of kidnapping Elena to break the curse. Jules and her werewolf pack capture Damon and torture him in his house but are stopped by Elijah who kills everyone but Jules who manages to escape. Brady is killed by Stefan after trying to capture Elena. At the end of the episode she and Tyler leave the town to an unknown location, with Jules promising not to lie to Tyler anymore when he states that there will be no more lies once they leave Mystic Falls.In The Last Day, Jules returns to Mystic Falls where Tyler is visiting his injured mother as part of a plan set by Maddox to capture him as part of the ritual to break the curse. Jules tries to get Tyler out of Mystic Falls to protect him but lets him speak to Caroline for a few minutes. He is then captured by Maddox along with Caroline. After Damon and Matt save Caroline and Tyler from Maddox, Damon goes to see Klaus and reveals to him what they had done. Klaus reveals that he had known something may go wrong and he had a contingency plan. He shows Damon a video recording of Jules chained up and turning into a werewolf.
In The Sun Also Rises, Jules is brought to the sacrifice spot by Greta with a spell that prevents her from turning completely. She is the first to be sacrificed by Klaus but before she dies, she tells Elena that everything she had done was for Tyler because she didn't want him to be alone in his adapting to the life as a werewolf. When her time to be sacrificed came, she quickly, almost instantly, attacks Klaus but he overpowers her and kills her by ripping out her heart. He then puts Jules' blood in the fire that is burning the Moonstone.
In Ghost World, Anna says that she thinks that some supernatural beings find peace after their death and that they don't go to The Other Side. Since Jules hasn't appeared as a ghost, she more than likely found peace.
Jules was arrogant and brave when facing vampires, only when she had the advantage, believing that she would be able to control her wolf form so she could kill Damon for killing Mason. This belief of her's backfires/proved to be incorrect as Jules unwillingly killed innocent humans in her failed attempt to kill Damon.
She was willing to lie when she believed it benefitted her and fellow werewolves; as she lies to Tyler about who killed Mason saying that Caroline did it with her vampire friends without reason even though they had a good reason to do it (he was working with Katherine and would have killed Stefan or Damon otherwise). Like the rest of her pack Jules was selfish as she willingly tried to kidnap and kill Elena, to break the (suppose it) Sun and Moon Curse, so she would not transform into a wolf every full moon.
In her final moments before being killed by Klaus, she tells Elena that everything she had done was for Tyler.
Powers and Abilities
Jules possessed all the standard powers and abilities of a non evolved-werewolf.
Jules had the typical weaknesses of a non evolved-werewolf.
Jules was in a romantic relationship with him. They cared about each other, but they were ultimately killed by vampires.
Mason and Jules were in contact before Jules met Tyler. Mason asked her to watch over Tyler and mentor him as a new be werewolf. Although the two had rough patches, especially while Tyler was still dating Caroline Forbes, they eventually grew closer in friendship as Jules taught him their werewolf ways.
- Mason and Jules (Good Friends/Former Allies)
- Jules and Damon (Former Enemies)
- Jules and Elena (Former Enemies/Frenemies)
- Jules is a unisex name that comes from Latin origin, and the meaning is "youthful". 
- Jules was presumably the alpha of her pack, seeing as she was the most experienced and showed the most authority.
- She's the first female werewolf to appear in the series.
- She is the first "ingredient" Klaus sacrifices to complete the ritual by ripping her heart out.
- It was implied that Jules had enhanced abilities for a werewolf such as being able to sniff out vampires and detect the scent of wolfsbane; as well as having partial control over her wolf form. This was seen in By the Light of the Moon, when Jules deliberately hunted down Damon and broke into his home, attempting to bite him, accidentally biting Rose instead. Jules said to Damon that she could sniff him out, as well as the wolfsbane in her drink. However, Jules did not have full control over her wolf form because she woke up naked in the woods the next morning only to discover that she had killed a group of campers.
- Jules mentioned a code of loyalty between the lycanthrope species and this may have been why she wanted to help Tyler adjust to being a werewolf.
- Although Jules was no match for a vampire without the full moon, she had enhanced fighting abilities.
- Jules was killed in the same way Mason was, Heart Extraction
- Jules was willing to kill Elena to break the fake Aztec curse.
- Jules may have bitten vampires in the past, having known what symptoms Rose would be having.
- She was the only werewolf to have killed anyone in her human form, apart from Stevie.
- Her, Tyler, Mason and Hayley have the longest count of appearances of all the werewolves, the other werewolves only being minor characters and getting killed-such as Stevie, Brady and the rest of Jules' werewolf pack.
- Jules was one of the three women used in the sacrifice.
- She was the only werewolf who escaped Elijah in Crying Wolf.
- She was the first werewolf to bite a vampire on-screen.
- A member of the first werewolf-werewolf romantic relationship we are introduced to.
- She most likely found peace or was sucked into oblivion when The Other Side collapsed.