If I may suggest something...:
Porygon:
- remove Psybeam(Psychic type) and replace it with Signal Beam(Bug type) - will be funnier xD
Golbat:
Its moves/CD's are pretty good, but the damage suck, a lot.. I know that Crobat will be better, but come on... make it stronger and maybe add it a new move:
- Air Cutter(flying)CD 40 - level required to use - 55 or higher - should look like a twice used wing attack(like fury cutter)
- replace Absorb(grass type) with Leech Life (bug type)
#edit
Rapidash:
- lower Cd's of Ember(from 18s to 14s~), Flamethrower(from 30s to 25s~), Fireball (from 30s to 24s~), Horn attack(from 30s to 18s~)
- add new move, maybe on of them - [Tail Whip, Inferno(something like Ember, but hits more and burns more), Fire Blast]
#edit2
Magneton:
- lower Cd of Electric Storm(from 100s to 60-70s~)
- there comes Johto update, so maybe add a STEEL TYPE move ? ex. 'Metal Sound', 'Magnet Bomb' or 'Mirror Shot'
If I find more things to repair, I will edit post.