Because you like Donkey Kong in Donkey Kong
Wario is greedy, gross, and gluttonous. See them in WarioWare.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.
Fox McCloud leads a team of pilots through the Lylat System in search of the evil genius Andross, the villain that killed his father. See them in Star Fox.
He's an everyday earthworm turned intergalactic hero. See them in Earthworm Jim.
M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
Crono may not talk, but this time-traveling hero's heart speaks volumes. See them in Chrono Trigger.
Needles Kane says shut up and bleed. See them in Twisted Metal .
Mario is a plumber who wears a ridiculous outfit, eats weird looking mushrooms, and fits himself inside your pipes so he can save a princess. See them in Super Mario Bros..
Rayman is a fearless hero who flies into action with a propeller on his head and a smile on his face. See them in Rayman.
A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.
Clank is the quintessential rational, intelligent robot sidekick. See them in Ratchet & Clank.