So, I really hate to be the one to say this,
but I don't like the battler sprite at all. While the ideas might be okay, they lack a real, defined shape and appropriate shading, this actually seems off in general. Like this, I wouldn't use them in any game, especially the 2nd and 3rd one, the first is acceptable at best. I'd suggest you either get a good spriter who is willing to do your pokemon sprites (those are rare) or that you go back and practise alot, start with editing some pokemon sprites and get used to the shading style. Don't feel bad if you don't like your fist attempts (though from what you wrote here, the problem seems quite the opposite), and if you want, you can post your sprites you did for practise here so the community can give feedback and help you improve.
And, very important, be your own worst critique.
One of the most dangerous things that can happen to any artist is that they can't see their own flaws.
I thought I should tell you before you get either bashed or trolled.
I expect many 15 year olds (hopefully not including the Niche) to level me down. For the record, my level was at 37 when I wrote this. Let's see what happens. : D