Because you like Asuka Langley Soryu in Neon Genesis Evangelion
Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.
Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.
Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .
Tonya Harding has been shoved around her whole life. She just wants to feel free. See them in I Tonya.
The Grinch's heart is just too small to appreciate Christmas. See them in Dr. Seuss' How the Grinch Stole Christmas.
Tidus is upbeat, carefree, and desperate not to become his father. See them in Final Fantasy Series.
C is for cookie, and that's more than good enough for him. See them in Sesame Street.
Stan Marsh is a fourth grader who is the ladies man of his classroom. See them in South Park.
Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.
Think you grew up fast? At 12, Mathilda is an aspiring assassin eager to avenge her family's murder. See them in Leon: The Professional.
NiGHTS is a powerful but childlike spirit who hates being told what to do. See them in NiGHTS into Dreams.