Myers involvement was officially outed when the network ABC recently added his name to the show's credits.
Arnett issued a statement keeping up the pretence that he had no idea that Maitland was not the real deal.
"I was just as surprised as the next guy when I heard The Gong Show's host, Tommy Maitland, was a character portrayed by the insanely talented Mike Myers. Despite this shocking news, I'm in total awe of the man, and we are so fortunate to have him as our brilliant host."