Cast and Crew of Mastodon

Mastodon

Old memories and ghosts from the past resurface when a man reluctantly agrees to help his now-alcoholic childhood friend sober up over the course of a weekend.

Full Cast of Mastodon

Sean Kleier as John

Sean Kleier

as John

Sean Thompson Kleier (born 1987) is an American actor. He is primarily known for the role of Lex Von Weber in Odd Mom...

Gabriel Rush as Young John

Gabriel Rush

as Young John

Gabriel made his feature film debut in Moonrise Kingdom as Skotak, one of the principal khaki scouts (remember the tr...

Tommy Nelson as Dan

Tommy Nelson

as Dan

Tommy Nelson was born on December 7, 1997 and is currently 27 years old.