His other roles include Prince Eric/Eric in Once Upon a Time, Derek Bishop in Friday Night Lights and Dr. Paul Grady in ER. McKinney also provided the voice for Jack Kelso in the game L.A. Noire.
Gil is a regular at Supernatural conventions, often singing along with the cast. He is currently married and has a daughter.
Gil also revealed in an interview that he once auditioned to play Sam Winchester.
- Gil first met Misha Collins during the episode Mother's Little Helper, for which Misha was the director.