For Serperior I would run HP Fire, Being a lead, that works much better.
For Togekiss, I would highly reccomend running Wish over Ancient Power, ( 252 Ev's makes for a good wish switch in! )
No suggestions for Torkoal, he looks pretty solid, although I'm not a Sludge Bomb fan.
Give Azumarill a Choice band.
Pikachu needs a naive nature.
Magikarp's moveset is just plain terrible! UGH! I mean really! Just.. You know what, just keep it ;]
That's all I have, don't forget that these are still forums, meaning they are endless discussion.