Iirc, Chesnaught was suggested as the team's Electric/Fighting resist. Gliscor (which I mentioned on the 2nd page) works nicely. If you can't get one with Poison Heal, then Gourgesut or Trevenant are good as well:
-Super Size Gourgeist w/Leftovers
Nature: Impish
Ability: Frisk
EVs: 252 HP, 252 Defense, 4 Sp.Defense
Moves: Leech Seed, Wili-o-Wisp, Shadow Sneak, Seed Bomb
or
Small Size Gourgeist w/Leftovers
Nature: Jolly
Ability: Frisk
EVs: 252 HP, 72 Defense, 184 Speed
Moves: Will-o-Wisp, Leech Seed, Seed Bomb, Protect/Substitute
-Trevenant w/Sitrus Berry
Nature: Impish
Ability: Harvest
EVs: 252 HP, 180 Defense, 76 Speed
Moves: Leech Seed, Substitute/Protect, Will-o-Wisp, Phantom Force/Shadow Claw
or
Trevenant w/Leftovers or Lum Berry
Nature: Impish/Adamant
Ability: Natural Cure
EVs: 252 HP, 180 Defense, 76 Speed
Moves: Horn Leech, Earthquake/Rock Slide, Will-o-Wisp, Rest