Like cmsnrub said, I'd put BP over Zap Cannon. Between Subs and Miracle Berries it's rarely going to be effective (not that a 50% move is very effective in the first place...).
I don't see much point in this, a Snorlax with the exact same set (Rest over Moonlight) would do the same thing only better. Again, I'd go with cmsnrub and put Belly Drum over Psychic, she just can't do much as a basic attacker. The Sunny Day set that Will suggested would also work better...
I prefer Roar over Swagger, but this is fine. Perhaps if you go with the Sunny Day set on Clefable, you could use Entei to complement with a Sunny Day, Flamethrower, Return, Solar Beam set, only problem being it would screw Gatr over..
Slash? If you want a normal type attack use Return. I really wouldn't suggest using Gatr as a Curser at all, but if you do you should probably get rid of Surf and Return/Slash for EQ and Rock Slide. The best Gatr set is probably EQ, Roar, Rock Slide, Surf...
This looks pretty good, though I don't know that it really needs Curse...
Fine, Whirlwind's cooler than Roar though .