Masahiro Sakurai has revealed in his semi-weekly column in Weekly Famitsu that Shigeru Miyamoto originally requested Pac-Man in Super Smash Bros Brawl on the Wii. Sakurai says that he remembers thinking it was a little too far-fetched at the time.
“During development of Smash Bros. Brawl, Mr. Shigeru Miyamoto of Nintendo approached me and asked, ‘Can’t we have Pac-Man as a guest character?'” Sakurai recalled. “At the time, imagining the image of Pac-Man and his incomplete pizza shape, I thought to myself, ‘Hmmm… That’s a little too farfetched.'”