Many times Digger would have to be tricked into battle, but when faced with enemies he proved more than competent in upholding his end of the fight. Harkness also would play a few undercover roles for the Squad, convincingly managing to be other slimy, criminal types. Later, Digger would try a simple series of pranks for amusement, hitting various members of the Squad with pies. For a time, suspicion had been diverted from him because he had used his skills to pie himself, seemingly being hit by the 'assailant' from behind a wall. When the Squad confronted Digger as the culprit, he lost his temper and shouted that they could not really punish him since he was already in prison and in the Suicide Squad. He asked Waller, "What are you going to do about it, Fat Lady?!" Waller dropped him from a helicopter onto a deserted island.