Does anyone have any advice for countering Grundy? He's like the one character that I have no clue how to fight. Can his ground throws be avoided?(other than not getting knocked down) I've been swapping back and forth between Doomsday and Supes and I don't really have any success with either. Probably doesn't help that so far I'm unable to tell when he can't be staggered, Doomsday turns green, Luthor has the shield, what is the visual indicator for Grundy?
I have some. I'm a Grundy main so take this as 'This is the stuff I have trouble dealing with' rather than 'This is what beats me'
General:
Unless you're sure your jump in attack is going to crossup, do not jump in on Grundy. His down 2 has a good hitbox and he gets a free chain grab if it hits.
Grundy's swamp hands hits low so you ideally want to block low at full screen distance.
Whatever you do, do NOT get cornered by Grundy.
Abuse backdashes on wakeup if the Grundy player shows that he's not going to do meaty moves. If he does, abuse your wakeup specials.
Superman:
You ideally want to stay in the air as much as possible. Grundy does not have many options against superman's airdash. You can also do air laser to keep him at bay, but there's a chance if the Grundy player is good, he can catch you in EX Swamp hands when you're about to hit the ground. So I would recommend meterburning your air lasers. A good strategy would be to use your mobility as much as possible, hit him with interactables and just keep away for the rest of the match. Its lame, but it must be done.
Doomsday:
Doomsday doesn't give me much trouble. But if the Grundy player does not have meter, abuse his meteor smash. If the Grundy player does have meter, he can b+3 MB for a full combo. You do not want that.
Also abuse him with df+2 (the ground smash attack) that does both overhead and low.
As for when Grundy can't be staggered - All of his meter burn specials have 1 hit of armor (he flashes green when you hit him). His walking corpse move (he'll walk forward outstretching his arms) also has 1 hit of armor.
His super has infinite armor, so you want to stay away.