MS Paint World: Little Scarlet Ghost Girl

From Wrecking Crew '98, it's the secret character, Onnanoko! What, you don't recognise her? She's only the best Super Mario character! Joking aside, Wrecking Crew '98 is a really charming game with a lot of love and attention put into it, which is a little surprising for such a late release. The Story Mode has some secret characters you can only fight if you beat the standard fights fast enough, and Onnanoko here is one of them- she's a ghost girl who wants someone to play with, and hey, destroying a building with Mario is good enough. What a cute design!