Ford Prefect

Born in Betelgeuse, Ford Prefect is a researcher for the Hitchhiker’s Guide to the Galaxy who has been stranded on Earth for fifteen years, posing as a human. He befriends Arthur Dent and eventually saves him when the Earth is demolished. Being a researcher for the Guide, Ford himself serves as a guide to the universe for the bewildered Arthur.
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Mos Def

Yasiin Bey (birth name Dante Smith), also known by his stage name Mos Def, is an American actor and hip hop musician born in 1973 in Brooklyn, New York. He his well known for his roles in films like 16 Blocks, The Italian Job, Brown Sugar and Be Kind Rewind, and for his role in the TV Show Dexter.