bomb and sienna’s lvl 7 ult
Also I was playing with bots and they wouldn’t dodge his grab, but after a while he stopped eating them and just dribbled them a bit and tossed em away.
As always, my strategy is to throw my comrades at the problem until the enemy hits their kill limit and shuts down.
I mean, it would be a nerf even if it wasn’t counterable. 
all you have to do is dodge his grab animation it is real hard to miss. big windup. just dodge backwards. if he does grab someone bomb him or use a ultimate like kruber charge to stun. having ton of damage is good too.
most of the time he does 3 attacks and then the grab animation