Professor Pyg - Injustice 2: Arcade Ending: Red Hood

A costumed criminal operating in Gotham City in the aftermath of the Brainiac Invasion, Professor Pyg, aka Lazlo Valentin, was a sadistic serial killer who believed he could make people "perfect." Over the years, he kidnapped and mutilated numerous people, transforming them into his personal army of living dolls - Dollotrons.

His most recent victim was Sasha, a young woman who managed to escape his clutches before he could complete the process and lobotomise her. Wishing to silence her, he gave chase, cornering her in an alleyway. 

However, before Pyg can kill her with his cleaver, he is attacked by Red Hood. The vigilante took him down, shooting him dead as he screamed for mercy.