10 Celebs You Didn't Know Appeared In Futurama

Coolio might not be the most high profile of celebrities, but he's still something of a household name (if only for his outrageous hair). The rapper's role on Futurama, while memorable, was fairly blink-and-you'll-miss-it - causing many fans to do just that.

Here, Coolio lends his voice to Kwanzaabot, the festive robot that first appeared in A Tale of Two Santas.

Kwanzaabot is said to travel the world during the festive season, handing out a book titled "What the Hell is Kwanzaa?", and inexplicably knows Bender somehow.

He might just be one small part in the huge tapestry of uniquely interesting and hilarious characters that make up much of Futurama's backdrop, but Kwanzaabot isn't easy to forget.

Knowing Coolio voices him, though? That's easy to miss. The character only has a handful of lines over his few appearances, although the fact that one of them is a rap probably should have given something away.