Timantha Turner is the gender-swapped alter ego of Timmy. In order to find out what Trixie wanted for her birthday, Timmy accidentally wishes himself into a girl so that he can find out what type of stuff girls like.
Timantha is the result of Timmy being unintentionally wished into a girl by Wanda, one of his fairy godparents. Timmy and Cosmo were making fun of girls which angered Wanda. Wanda quickly zaps him with her wand, turning him into Timantha. Timantha can think about "boy" things if she thinks really hard, but she mostly thinks girly thoughts.
Her hair is straighter than Timmy's but with two slight chips in it at the front (usually only one is visible), as well as a ponytail. She wears a pink headband with a bow, pink earrings, pink lipstick, long eyelashes, as well as a pink colored dress with a white blouse. Like Timmy her shoes are connected to her blouse/pants. Her voice is higher than Timmy's. Her fingernails are sharper than Timmy's, and she walks in an extremely exaggerated girlish manner, like a ballerina. When Timmy wishes himself into a girl, her mind is overcome with girlish thoughts (rainbows, clouds, unicorns, and other stuff) and she must concentrate to remember boy stuff (comic books, superheroes, etc.).
Unfortunately for Samuel Nakaoka protected from Francis, as result, Timantha beating not only Francis, but Samuel Nakaoka too due holds on her torso (possibly her breasts). She grab Samuel Nakaoka and whack Francis like a hammer after she says "Don't. EVER! Do THIS!". Due to Samuel Nakaoka's action,
The name Timantha is a combination between Timmy and Samantha.