Mr. G.Petto (voiced by Fred Willard): A teacher who originally appeared as recurring character in The Boondocks comic strip. In the series, he is Riley’s teacher. In the strip, however, heis Huey’s teacher. He caused a lot of controversy when he called Riley a “nigga”, with Riley and Grandad threatening to sue over the incident. He claimed to be confused as to how offensive it could be taken, given Riley’s constant use of the word, and the hip-hop songs apparently advocating its usage. The incident eventually grew into a political debate, from left-wing and right-wing proponents. Throughout, he seemed regretful and apologetic for using it, admitting his own confusion over the word. Appears in “The S-Word”.