Now you guys got me thinking about squads for Grah. If I skip the status null lead I could do:
Lilly Matah lead
Dshel
Zelnite
Mariudeth
Ulkina
Grah friend
Ulkina still doesn't have access to status prevent yet though, so I'd have to bring Stimulants in case she gets paralyzed.
Grah doesn't do the paralysis single target attack move as often as you might imagine as long as you keep the pressure up and move him through his hp thresholds for the scripted attacks/responses.
Your group looks really solid seriously. What I beat grah with wasn't even playing the same sport you are with those heavy hitters. Hell, at this stage of the game, I'm almost surprised someone hasn't done a video with a 6* Ardin soloing grah (already happened with rowgen soloing karl and zelnite soloing juggernaught for trial 003). Yeah sure, fully evolved 6* forms/bb levels, imps and sphere frogs used, but it is right there.
Magress dungeon sphere plays a role in some of these since it does a lot of nice things.
Black Knight Spear Reomurugu (Def+30%, HP+30%, Absorb HP when attacking, add BB gauge during normal attack).
Combo it with something that does status immunity and you have a really tanky unit.