Dennis Reynolds might be the most disturbing character in sitcom history. When It’s Always Sunny in Philadelphia first premiered in 2005, Dennis was just another arrogant bar owner running Paddy’s Pub with his equally terrible friends. But over 16+ seasons, the so-called “Golden God” has devolved into something far darker — a manipulative predator wrapped in sitcom charm. From the terrifying implications of the D.E.N.N.I.S. System… To his obsession with skin masks and psychological control… To “Making Dennis Reynolds a Murderer” and the lingering question: Is Dennis actually a serial killer? This is the complete breakdown of Dennis Reynolds’ maniacal decline.