Do appearances really matter? They are white.Well, the main roster of Regular Show consists of a bird, a raccoon, a sentient lollipop, a yeti, and a gumball machine so. Gumball's character roster is a series of animals and animated objects so...
Plus, amazing world of gumball turned white when they became realistic.
[video=youtube_share;4X_VCMffpH8]https://youtu.be/4X_VCMffpH8[/video]
Animals are just white people too.