For years, there has been a rumor that the scene at the Turtle Club happened to be filming on September 11, 2001, followed by a minute of silence. This, however, is not entirely correct. Production didn't start until September 24, 2001. That scene was the first to be shot, and everyone felt uncomfortable with the idea of making such a silly movie after such a terrible tragedy. On the set, director Perry Andelin Blake gave a heartfelt speech to the cast and crew, followed by a minute of silence. That situation happened when Perry Andelin Blake was already in his turtle costume.
In a 2023 interview, Brent Spiner stated that, despite the film's negative reception, he has no regrets about his involvement in the film. He said: "They're almost classics. I did a movie that is a classic, I think, and it's called Master of Disguise. Dana (Carvey) wrote it, and he wrote it for his two 9-year old boys at the time, and it truly is a film for 9-year old boys. It didn't do well, but it was so much fun to work on. I love Master of Disguise in its terribleness but it was so much fun."
During rewrites, Dana Carvey made the film to make his two, at the time, preteen sons laugh (because the majority of his projects were not suitable for children). His sons really hated live-action PG movies. They thought they were nerdy and not cool. So Carvey tried to make a movie that seemed PG-13, but was actually PG.
Dana Carvey wanted to do the Pacino impression for six more minutes. But, Adam Sandler's people at Happy Madison stepped in and reined him in.
Dana Carvey played the drums himself for Pistachio's turtle character during the credits.