Lenford "Lenny" Leonard and Carlton "Carl" Carlson are supporting characters in the Fox animated series 'The Simpsons', voiced by Harry Shearer and Hank Azaria, respectively. They are best friends of Homer Simpson and work with him at the Springfield Nuclear Power Plant. Wikipedia*
On the C-SPAN Networks:
Carl Carlson has one video in the C-SPAN Video Library; the first appearance was a 2011 Speech.