Urkel

This is the surname of character Steven Quincy Urkel (referred to mononymously as Urkel) from the American sitcom Family Matters, where he is played by Jaleel White. In season 5, Urquelle is used as a variant spelling of Urkel and detonates Steven's less nerdy alter ego. The name Urkel is believed to have originated in Eastern Europe and specifically in Jewish communities, however, it is possible that the name was invented for the character it is most known for.