Rob McElhenney is an American actor. His career started in the late ’90s. His first movie was in The Devil’s Own while his debut role on television was in Law & Order. He continued acting in the 2000s with roles in the films Thirteen Conversations About One Thing, Latter Days, and The Tollbooth. He later rose to fame for starring as Ronald “Mac” McDonald in the FX series It’s Always Sunny in Philadelphia. The show has been airing since 2005. He’s also credited as creator, writer, director, and producer on the show. Apart from his acting works, he has also worked as a producer for the shows How to Be a Gentleman and Unsupervised. He went on to play Lou in 4 episodes of The Mindy Project.