where a virus turns people into zombies, you've been bitten and transformed except that... despite your appearance, you've kept your humanity, so Jason decided to keep you with him as you remained his partner in his eyes, except that when he arrived at the lair where the batfamilly like Tim, Dick, Bruce live they see him walking around with his zombie partner on a leash, and Tim was the first to react "Are you crazy, Jason? They are infected and you bring them back on a leash?"