The Yes Guy

The Yes Guy (also known as The Frank Nelson Type Homer refers to him as "That jerk who always goes 'Yeeeeees?'") is a character known for bellowing “Ye-e-e-es?!” in a rising inflection, and appears to be highly eccentric in both his speech and appearance, voiced by Dan Castellaneta.

Appearances
During his first appearance, in “Mayored to the Mob,” Homer asks “Why do you talk like that?”; Yes-Guy’s response was “I had a strooooooke!” He also made an appearance in Homer vs. Dignity of Season Twelve. During "The Great Louse Detective", he enjoys Marge Simpson's hair rubbing upon his buttocks. He is often seen working at Costington's department store, in which both he and Costington are apparently on good terms with. He is juror number twelve of the Springfield Panel of Jury ("The Monkey Suit"). During "The Lastest Gun in the West", he gives Bart Simpson some free ice cream.

Creation
He is a tribute to a recurring Frank Nelson character from The Jack Benny Program, I Love Lucy, and Sanford and Son, whose trademark greeting in all his characters was a loud, drawn-out “Yeeeeesss?!” Inexplicably, the original character could always be found working behind the service counter of whatever shop Benny or Fred Sanford might be patronizing, and his Simpsonian counterpart is equally omnipresent.

Variations
There was also a Brazilian version seen in the episode Blame It on Lisa, uttering a Portuguese variation of the catchphrase: "Si-i-i-i?!

Physical Traits
" The Yes-Guy shares the physical characteristics of his real-life counterpart: he can be described as a rather squat, stocky man with a moustache, and black hair receding into a widow’s peak.