Hynes got his professional start at the age of eight during a 72-performance run of the musical stage production of A Christmas Carol as Tiny Tim, followed by a Canadian tour of The Who's rock opera Tommy, playing the role of 10-year-old Tommy. He followed this up with his first feature film, Little Men, starring Mariel.
He portrayed Atreyu in 13 episodes of the TV series Tales from the Neverending Story and The Chosen One in the 24-episode run of Peter Benchley's Amazon. Tyler was nominated "Fan Favourite" at Canada's Gemini Awards at age 15. He later starred in Tagged: The Jonathan Wamback Story.
