Because you like Inuyasha in Inuyasha
Alex DeLarge likes his favorite milk-based, drug-laced cocktail. It helps him get in the mood for a night of "ultra violence." See them in A Clockwork Orange.
Rogue's touch is literally deadly, and she's trying to learn from the older mutants how to manager her powers. See them in X-Men Series.
Kim Kelly is a high school bully who's normally in a bad mood. But there's a softer side to her. See them in Freaks and Geeks.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.
Ariel knows there's a whole other world above the sea, but exploring it comes at a big price. See them in The Little Mermaid.
Sookie Stackhouse is a waitress who can read minds and break hearts. See them in True Blood.
Dory is more than a little forgetful, but she'll always remember to have your back. See them in Finding Nemo.
R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.
Tina Belcher is on the cusp of puberty, and she has no shame when it comes to boys, butts, and brassieres. See them in Bob's Burgers.
Good fashion? Check. Snarky quips? Check. Supernatural evil-fighting powers? Also check. See them in Buffy the Vampire Slayer.
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.