Hey, these are great! I really like your use of colour.
If I had one minor criticism, it would be that your sprites often seem to be facing to the left, and most Pokémon sprites point slightly more forward. But other than that, they're great!
You say you just do this for fun?
Thanks!
Now that you said that, I noticed it a lot more.

Probably something to keep in mind for me, I guess.
Plus, spriting's more of a fun thing for me. I do commissions, but I just like spriting a lot. :3