Normal: NA
Fire: immune to burn status
Water: NA
Electric: immune to paralysis status
Grass: immune to powders, leech seed
Ice: immune to frozen status, hail. 30% accuracy on Sheer Cold
Fighting: N/A
Poison: immune to poison status
Ground: immune to sand, Thunder Wave
Flying: N/A
Psychic: N/A
Bug: N/A
Rock: immune to sand, sp. def boost in sand
Ghost: immune to trapping effects
Dragon: N/A
Dark: immune to Prankster
Steel: immune to poison status, sand.
Fairy: N/A
I think that's all of them...