Gregory Scott Cummins is an American character actor known for his recurring roles in It's Always Sunny in Philadelphia and Bosch.

Gregory grew up in Orinda, CA (East Bay Area in Northern CA). In 1985, after receiving his M.F.A. in Acting from U.C.L.A., and many years performing in theatre, Greg began his Television and Film career. He has performed lead, supporting lead, and supporting roles in many feature films and lead and guest starring roles in even more T.V. episodics, sitcoms, & network and cable movies. He is best known for playing heavies but he has performed in many comedic and dramatic roles. Greg took drama classes as an undergrad while attending Cal-Berkeley (where he eventually received his B.A. in Theatre Arts) and the University of Hawaii. At both Universities Greg was also on a football scholarship as the starting punter for California (U.C. Berkeley, (1974 & 1975 seasons) and the University of Hawaii, (1977 & 1978 seasons) leading the nation in multiple punting categories in his final two years at U. of Hawaii. Greg then turned down a contract to play for the NFL'S Green Bay Packers and signed the following year with The San Diego Chargers where he was released due to injury. Greg also teaches acting when his schedule permits. Greg is in his 35th year as a professional actor in the Entertainment industry and continues to shine on screen.