These are good. The guy seems to be a bit too thin.
First one is the best one for me. Might be even an original Idea.
Secound one. I don't know. Looks good. I just know the first 3-4 gens. Probably you got inspired by another Pokemon.
The last Pokemon look familiar with another one which name I forgot. Tough the other one looks darker and got a bit of yellow & red.
Maybe you know what I mean.
Do you do pokemon roms? And if yes do you use the RPG Maker? If not tell me the software. I wanted to make one too before I leave the time span where I still "like" Pokemon.