Mike MacDonald has died at the age of 62.
The Toronto Sun said the late comedian had battled bipolar disorder and drug addiction for much of his adult life, was diagnosed with hepatitis C in 2011 and underwent a liver transplant in 2013.
His television credits include "Just For Laughs," "The Late Show with David Letterman," "The Arsenio Hall Show" and "Comedy Club All-Star Show."
He also headlined the CBC stand-up specials "Mike MacDonald, On Target," "My House! My Rules" and "Happy As I Can Be."
"We're talking about 40 years and countless comedians that emulated and learned from him, he was a ground breaker, he was an original, he was truly Canadian," Wagman said.