Errors

[Retro64]

This sheet should be moved to Yoshi Customs under "Enemies":
https://www.spriters-resource.com/custom...eet/98596/

I don't know enough to jump in here directly but I see Mario on the sheet so can you clarify? Is this character Yoshi-specific?

Crazee Dayzees are Yoshi specific and most most likely put there by accident (the rest of the Crazee Dayzee sheets are already in the Yoshi section:
https://www.spriters-resource.com/custom...eet/19291/ & https://www.spriters-resource.com/custom...eet/17692/ ), I'm pretty sure that Mario is just there for size reference.

Petie

This sheet should probably be moved back to "Kirby Right Back at Ya Characters" from "Other Bosses" since he isn't a boss.
https://www.spriters-resource.com/custom...et/115954/

What is he classified as? Would he fit under the existing enemies section?

Escargoon really isn't classified as anything besides "antagonist" since he hasn't played any major roles in any games (he had a cameo in Mass Attack and that's about it). He can't be labeled as an enemy since he really hasn't done anything villianous besides listening to Dedede's orders. I would either give him a new "Kirby Right Back at Ya Characters" section or put him in "Miscellaneous"