As Superman and some of the Justice League fight with Batman over removing the inhabitants of Arkham Asylum, Harley Quinn releases the villains to fight them, including Grundy, who attacks Damian Wayne. He is eventually defeated by Batman and Superman, the former blasting his hands off and the latter ramming himself straight through Grundy's chest since he will reanimate. Grundy reappears in Year Five where he is revealed to be cargo the Regime soldiers are investigating.