Along with Lenny, Carl is not just Homer's co-worker at the Springfield Nuclear Power Plant but one of his best friends since childhood, and he likes to call himself "an urban Lenny." He is black and handsome, a Buddhist with a master's degree in Nuclear Physics, fond of bowling and having a drink at Moe's. He is likely a liberal in terms of his politics, having described local talk show host Birch Barlow as "a right-wing crackpot". He has stated in passing that he has a family and that he's Homer's supervisor, but he mostly keeps things to himself due to his uncontrollably abrasive tongue.
He is also a member of the The Sacred Order of the Stonecutters which is a secret society.
