A relatively obscure boo enemy from Yoshi's Island. This little guy left a big impression on me in my younger days.
Hit them with an egg and they swell up, hit them again and they get bigger. You can guess what happens after the third hit.
Typically overshadowed by Bigger Boo when it comes to inflation. I loved to tease these guys by chucking eggs until they were fit to burst then letting them deflate a little before repeating the process.

This is another VRchar/Neos avatar I've been working on. I hope to make him as fully functional as the Yoshi's Island counterpart.