Does anything do more damage than a critical rush of bats from Cain with 1 hp after he has done tantrum? Because its 90 damage standard.
It was shown somewhere that VV and Darla Cross can do the most damage possible. For raw numbers without setup, however, CC, Cain, Higashi, Tafari, Angelan, Gorbax, and Anex have the big dice, with CC being the only one who doesn’t need a buff and can force close to use his big nuke.
So if you want to count buffs and setup, the answer is yes, there are plenty of folks who can do more damage.
Without buffs and setup, yes, there are still some others who do more damage. Also, consider that resist impacts Cain more due to multihit.