Sonicfan32's sprite rippings.

[Sonicfan32]

Too bad, it only works when at least one palette replaces the black with a non-black colour.

But I looked the game up:
https://www.youtube.com/watch?v=r907gdAkPls
Skip to 2:48. As far as I can see, all sprites shown on your sheet are present and I can't see any black pixels on Momotaro.

Oh, I saw it. So... having black pixels on the sprites is a no no... Ok. So, here's another sheet, using Davy Jones' technique. It's the gateway to the gambling minigame, and the minigame itself.