Danny DeVito Frank Reynolds Actor Charlie Day Charlie Kelly Actor, Executive Producer Glenn Howerton Dennis Reynolds Actor, Executive Producer Kaitlin Olson Deandra "Sweet Dee" Reynolds Actor Rob McElhenney Mac Actor, Executive Producer Artemis Pebdani Artemis Guest Star Lynne Marie Stewart Bonnie Kelly Guest Star Sandy Martin Mrs. Mac Guest Star Alejandro Patiño Mr. Juarez Guest Star Diddy Dr. Jinx Guest Star David Hornsby Executive Producer Tom Lofaro Executive Producer Michael Rotenberg Executive Producer Megan Ganz Executive Producer Nick Frenkel Executive Producer Rob Rosell Executive Producer Scott Marder Executive Producer Victor Hsu Executive Producer