Robo Koopa - S1-E52
Corrected entry: In the middle of the episode, Mario asks Dr. Nerdnik how to stop Robo Koopa, and he says you can't. If that's so, then how did he know to trick Koopa into pushing the ejector seat button? (00:06:40 - 00:12:35)
Robo Koopa - S1-E52
Corrected entry: During the whole episode, Robo Koopa had eight buttons on his body, two red, four white and two yellow. At the very end of the episode, when the Robo suit is changed to a pizza oven, all the buttons are yellow. (00:13:10)
Correction: Who says they didn't replace the buttons for different results? I don't think a Bullet Bill is needed to bake pizza.
Correction: Dr. Nerdnik may have meant that Koopa was unstoppable in the robot suit.