Famous for his voice acting contributions to such animated television series, movies, and video games as Action Man; G.I. Joe: Spy Troops; and Fatal Fury, Hildreth is also known for his stage credits, which include roles in Canadian productions of Shaw's Candida and Shakespeare's Hamlet.
He began his voiceover career when he was just ten years old, working on the animated series Beany and Cecil. He went on to attend Canada's National Theatre School.
After performing with a band called Davis Trading, he launched a solo music career, recording albums titled Complex State of Attachment (2008) and Signs of Life (2012).
Born and raised in Vancouver, British Columbia, Canada, he later settled in Los Angeles, California, with his partner, Smallville actress Kristin Kreuk.
He and Steven Blum were both part of the voice acting cast of the Nicktoons series Wolverine and the X-Men.