The son of filmmaker
Jules Arita Koostachin, he had his first major acting role in the
APTN drama series
AskiBoyz. In 2018, he had a stage role in Theatre for Living's collective play ''šxʷʔa'ət (home)''.
Red Snow, his first leading role in a feature film, was released in 2019. He received a
Leo Award nomination for Best Lead Performance by a Male in a Motion Picture, and a nomination for Best Actor at the 2019
American Indian Film Festival. In 2021, Koostachin appeared in
Run Woman Run as the ghost of
Tom Longboat. He received a second nomination for Best Actor at the 2021 American Indian Film Festival, and won the Remi Award for Best Actor at the 2021
WorldFest-Houston International Film Festival. He won the award for Best Supporting Actor at the 2021 American Indian Film Festival for his performance in
Portraits from a Fire.
Broken Angel and ''
Angela's Shadow, and has had supporting or guest roles in the television series Letterkenny, Cardinal, Hudson & Rex, and Molly of Denali''. He was a main cast member on the
HBO Max series
Duster. ==References==