>>55408060They probably don't even need it.
The single thing preventing Munkidori from being a staple (specially with all the PsySpam going around) is that he doesn't get Expanding Force. GF knew that a terrain-boosted double target move with 30% chance to toxic coming off a 130 base special would be a little bit too OP. He has pretty much everything else, he's fast, has a fantastic secondary stab, Fake Out, Helping Hand, the best pivot move in Parting Shot, Taunt, and can boost with Nasty Plot or Calm Mind.
Now Okidogi is actually viable, if not a staple, because Guard Dog + stab Upper Hand cucks Incineroar and that's enough to give him a niche.
Fezandipiti has the gimmick of spread moves like Icy Wind or Dazzling that also come with the chance to toxic, but that's basically all he does, and he really wants to run both Technician and Toxic Chain. Maybe if there was a held item that activates both of your abilities, but that would be monstrously OP in any other situation. He could use a reshuffling of stats because there's absolutely no reason why he should be a physical attacker.
And because I don't want to leave him out. Pecharunt is stuck in Mythical jail but he lacks the movepool to make an impact anyway. I wish he got Baneful Bunker, it'd make him a fun support meme mon if anything.