Michael Mellamphy has worked extensively in professional theatre since the age of 12. His first role in a video game was as Sean MacGuire, in Rockstar Games' Red Dead Redemption 2. 

TV and film credits include “Law and Order: SVU (NBC), “The Good Wife (CBS), Quantico (ABC), Bartender Wars (FLN), The Hindenburg Omen and Living in Exile.

His theaterical repetoire includes productions of Shadow of a Gunman, Juno and The Paycock, The Plough and the Stars, The Smuggler, The Naturalists, The Seafarer, Guy Walks into a Bar, Yeats In The Toilet, The Last Days of Cleopatra , The Prophet of Monto , After Luke and When I was God, The Hairy Ape, The Field, Philadelphia, Here I Come, The Cure, Romeo and Juliet, In a Bucket of Blood, The Prophet of Monto, The Agamemnon, Purgatory, Oliver, Reign Man, The Pirates of Penzance , Orpheus in The Underworld, Mother Courage and Her Children, Brother’s of the Brush.