Doyle is the bartender at The Cloak & Stagger, a bar in Langley Falls.
Stan and Francine drink at in "Deacon Stan, Jesus Man". Stan gets free drinks as a church deacon while Francine gets free drinks by passing herself off as Laurence Fishburne. In this appearance, Doyle was voiced by James Patrick Stuart.
He is present during mud wresting at the nudie bar in "Roger 'n' Me".
Doyle cameos in the telethon audience in "Phantom of the Telethon".
In "An Incident at Owl Creek" Doyle's doppelganger appears in Peru tending an airport bar.