R2-D2 (phonetically spelled Artoo-Detoo, and called "Artoo" for short), is a fictional droid in the Star Wars universe, an astromech droid. R2-D2 is one of the four main protagonists to appear in all six Star Wars films. He is portrayed by Kenny Baker.
According to the commentary of "Patriot Games", Artoo was intended to be depicted in wax having sex with actress Gwyneth Paltrow. However, Lucasfilm denied the request to use him, and was replaced by Harriet Tubman.
For Family Guy's parodies of the originals, Blue Harvest, Something, Something, Something, Dark Side, and It's A Trap!, Artoo is still played by Baker, but is voiced by Cleveland Brown, and acquires many of his mannerisms as well as his hair. In Dark Side, Baker gets a head concussion from the landing on Dagobah so he temporarily opens Artoo so he could throw up.