are there any you like in specific? Or any I can improve?
I really like the ones with dragonair spliced in with them. Same thing with the eeveelutions, they have a certain look to them that I can't point out. I don't see anything you can improve on at this moment.
For the Meganuim/Butterfree: It looks really cool, but I think it would look better if the wing to the right was bigger than/same size as the one to the left.
For the other two: Wow, those two must have took some time, they look great. I like the backgrounds also. It looks like there is a little bit too much going on for one sprite, though. (which isn't too much of a bad thing)
Your sprites are cool, I like the way you put them on the grass circles. It gives the sprites a nice unique feel to them. Keep it up :D
My Black Team
You make me want to sprite as much as I used to.
It's a good thing.