Kate

Kate is a werewolf and a main character of the series.

She was a former lover of Katherine Pierce, who met the sexy vampire shortly after her transition. Kate was seduced by Katherine, and the two had sex. However, it was a mere fling to Katherine, and Kate moved on.

Kate would later meet Hulk at Mystic Falls High, and the two entered an intensely sexual relationship, but the two would eventually become boyfriend-girlfriend.

Backstory
Kate was an untriggered werewolf for a majority of her life before accidentally killing a drunk boy that tried to force himself on her at a party. She then turned for the first time on next week's full moon, breaking every bone in her body as she transformed.

Personality
Kate is very sensual and is constantly shown in revealing clothes and flirting with anyone that she catches ogling her from afar. Elena calls her a "flirty wolf".

Appearance
Kate is incredibly beautiful and sexy. She has curly blond hair that flows down her back, expressive light brown eyes, and a very curvaceous body, complete with big round breasts and an equally big butt.

Powers

 * Super Strength: Kate possesses supernatural strength that makes her far stronger than immortals, Supernatural Hunters, and humans.
 * Super Speed: Kate is much faster than humans and some other supernatural beings. She can use this ability both in and out of transformation, with an animalistic quickness to her movements.
 * Super Agility: Kate possesses superhuman agility. In both human and wolf form, she can move, jump very high, climb, flip, and run incredibly fast without difficulty or exhaustion.
 * Super Durability: Kate can endure more trauma than humans without as much discomfort or injury. She can also sexually exert herself for long periods without tiring out.
 * Healing Factor: Kate possesses superhuman regenerative abilities. Like vampires, Kate can heal from most injuries, even in human form, albeit more slowly in comparison to a vampire.
 * Super Senses: Kate has extremely heightened senses of smell, sight, taste, hearing, and touch that exceed that of regular canines.
 * Lycanthrope Enhancement: Kate can make her eyes glow when she's angry or threatened, but only for a short amount of time. When she does this, she can temporarily access some of the power of her wolf form.
 * Shapeshifting/Transformation Control: During full moons, Kate will unwillingly transform from her human form and into her wolf form.
 * Full Moon: Kate's strength, speed, and agility are enhanced to their peak during a full moon.

Trivia

 * Kate is bisexual, as she has had sexual relationships with Katherine Pierce (albeit briefly), Hulk, and Josie Saltzman. She's also hooked up with numerous men and women.
 * She hates witches due to a bad experience with one.