He did just that actually in Mega Party Games, albeit shapeshifted into a citizen.
Better than this from his Made In Wario diary:I imagine Wario throwing fits when 9-Volt is way better than him at video games.
I went to 9-Volt’s house for a game tournament!
Of course I like him! But what can you say, since that 9-Volt guy was cheating, I didn’t win at anything. Because I have such a big heart, I don’t care that I lost! (But because it was a little frustrating, I left a big poo in the toilet at 9-Volt’s house)