Mmm...
I like the concept. It's been tried before lots of times too. And it's nice that you were able to fit in all the Pokemon's in the song.... the only thing I have with it is that it seems to lack energy. It doesn't seem to flow very well and sounds a little tripped at some points. Also your voice isn't bad, but I'd think that it'd be better if the accompaniment was more varied, (i.e. have a chorus, then refrain, then chorus again). Another thing that could help is maybe have a bit more drums? I'm not sure if that will definitely improve it, but it can't hurt to try it out a bit.
Maybe another remix of this will be much better.... for now it can still use work.
I look forward to the next remix.
-HFX