Malamar: Contrary
Super Power, Substitute
Swagger, Flatter

Zoroark: Illusion
???

Ditto: Imposter
Choice Speed (scarf?)

Greninja: Protean
Expert Belt
Night Slash, U-Turn
Power Up Punch, Waterfall

Mimikyu: Disguise
Toxic, ?, ?, ?

What is another gimmicky Pokemon/ability, bonus points if it resists or is immune to Fighting, Bug or Fairy so Zoroark can Illusion as them. (Mimkyu fits the gimmick and is immune to Fighting and 1/4 for Bug but I doubt Illusion and Disguise will mesh together the way I would like)

Pic is unrelated but pretty much the only Pokémon picture I already have.