Dennis Reynolds is one of the owners of Paddy's in Always Sunny in Phildelphia. Dennis owns the bar along with his childhood friends Mac and Charlie. Dennis comes from a very privileged upbring thanks to his rich father Frank. He definitely peaked in high school where he was considered popular. Despite graduating from the University of Pennsylvania, he seems content to run Paddy's his whole life.
Dee: Who slams a door?
Dennis: That guy has some real growing up to do. Have some repect for Christ's sake... I am legend.
Dennis: I am having feelings again. Like some kind of fourteen year old kid. You remember, feelings right?
Mac: Yeah. I have feelings every single day of my life.
Dennis: Do you?
Mac: Are you saying you don't have feelings?
Dennis: What I'm saying is a built up a shell.. a shell around myself. A cold, calculated shell that couldn't be broken by anything but marriage.