During the 1990s he had major roles in Black Robe (as Chomina), Free Willy and its sequels (as Randolph Johnson), Iron Will (Ned Dodd), True Heart (Khonanesta), and TV film Crazy Horse (Sitting Bull).
[5] In 2012, he performed the title role in an all-aboriginal production of William Shakespeare's King Lear at the National Arts Centre in Ottawa, alongside a cast that also included Billy Merasty as Gloucester, Tantoo Cardinal as Regan, Jani Lauzon in a dual role as Cordelia and the Fool, Craig Lauzon as Kent, and the play's assistant director, Lorne Cardinal, as The Duke of Albany.
[6] During his lifetime, Schellenberg taught acting seminars at Toronto's Centre for Indigenous Theatre and York University.
He conducted motivational workshops in schools and for cultural and community organizations across North America.
Schellenberg died on August 15, 2013, in Dallas, Texas after a long battle with lung cancer.