Nice I'll try them in a bit and report back. Nice work btw. You may be the only person on the web selling enough mons for a mon tamer game, at least they are good.
https://themightypalm.itch.io/mighty-pocket-pack This pack contains a bunch of mons, and the creator is working on more. I do believe he is working on back sprites too but I cant guarrantee it, he has already made some tho so i think its safe to assume.