10 Guest Stars We Want To See It's Always Sunny In Philadelphia

Although It's Always Sunny In Philadelphia is nowhere near the same level as the bubbly and wholesome world viewers have come to expect from sitcom comedy, it's still very energetic. So, introducing someone like Marc Maron, who has become a veteran of playing the pessimistic cynic, would be a significant mood shift.

Maron is best known for his stand-up, where he complains about life, talks about trends he dislikes and generally makes you laugh with his downbeat observations. Despite how low energy and severe he is, he's one of the funniest and most unique stand-ups in the game.

However, this long-running comedian is no stranger to the screen as he's had a slew of acting roles which have proven how well his personality works in character form.

You might have spotted in him Joker, GLOW, Spenser Confidential or even his self-created sitcom Maron. So, he wouldn't have any trouble sliding in here.

Watching the legendary Marc Maron get frustrated as he deals with the gang would make for comedy gold, as his typically short fuse would be pushed to its limit at Paddy's, and fans would love every minute of it.