Because you like Aku in Samurai Jack

Lelouch vi Britannia is a high school student by day, masked destroyer of tyrannical empires by night. See them in Code Geass.

A self-proclaimed diva, Mercedes Jones is on the hunt for a stage worthy of her talents. See them in Glee.

Oscar Martinez is a national accountant in an office of weirdos. See them in The Office.

Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.

His superiority complex coupled with his bitter desire for revenge makes Vegeta a formidable foe. See them in Dragon Ball Z.

David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.

Aerith Gainsborough has lived a simple life, but when the world is threatened she's willing to step up and do whatever she can to help. See them in Final Fantasy Series.

Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.

Raz is a 10-year-old boy who mostly stays in his own head, which makes sense since that's where he is strongest. See them in Psychonauts.

Neal Cassidy is a charming former thief with a heroic side. See them in Once Upon a Time.