This is a list of actors who have portrayed Bowser. * Rich Alvarez: Alvarez performed the voice of Bowser in early Stupid Mario Brothers installments, primarily Season One's letters. * Josh Kling: Kling was the first actor to legitimately portray Bowser onscreen. He performed the role for Stupid Mario Brothers: The Movie. * Austin Stevenson: Stevenson took the role of Bowser on for Season Five. The change was accepted when Bowser told Kamek to make him taller as he thought this would make him win.