Vancouver-based actress Karin Konoval played the dual roles of orangutan Maurice. Konoval was born in Baltimore, Maryland. Her film and TV credits include The X-Files (1995-96), Millennium (1997-98), The Outer Limits (1998), Stargate SG-1 (2003), the lead role in the feature Cable Beach (2004, for which she received a Philip Borsos award), Scooby Doo 2: Monsters Unleashed (2004), the mini-series Tin Man (2007), Supernatural (2009) and 2012 (2009). She has also received numerous awards and nominations for her work in theatre, her writing has been published in various anthologies, literary magazines, and broadcast on CBC Radio, and her artwork has been exhibited in Vancouver.
For her role as Maurice, Karin spent time with two old male orangutans at the Los Angeles Zoo, and another named Towan at Woodland Park Zoo in Seattle. She also learned to walk and run on the prosthetic arm stilts in a local park at dawn when there were few people around. Konoval confirmed that Maurice was based on "fiesty" Bruno, on Towan's "heart and soul" and on Clyde the walking orangutan.