Also available on https://mobians.ai/ for free!

Pony (XL) version of FluffySonic, this model can make several Sonic characters in a flat color and with a style that closely resembles kemono types of characters.

Recommended CFG is 4-7 depending on your tastes, if you're not sure, use 6.

It's not limited to just Sonic characters but others will most likely not look accurate unless you use loras.