Because you like Rayman in Rayman
Clank is the quintessential rational, intelligent robot sidekick. See them in Ratchet & Clank.
Ratchet is a shoot-first, ask-questions-later, and then-shoot-again kind of lombax. See them in Ratchet & Clank.
Meat Boy tenaciously throws himself into danger, and when he fails, he immediately gets back up and tries again. See them in Super Meat Boy.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.
After figuring out how both the light and dark halves of his soul could co-exist, Jak is maturing into a real hero. See them in Jak and Daxter.
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.
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
Donkey Kong is a strong, banana-loving, and caring uncle to Diddy Kong. See them in Donkey Kong.