the killer held a shell - proof vest under his clothes and a backpack containing a rifle , an axe and a fake pistol . two other knives were hidden near the crime scene . the defense confirmed that the man ' s face was painted pink with blackened eyes as he commenced the crime , but encouraged the media to make comparisons to the joker , the villain from the batman series . " i have a challenge , " the intruder told the first employee he sighted , after which he initially stabbed her , and started his retreat . his female child care attendant attempted to disarm the shooter while they locking the doors . the victim stabbed someone trying to carry victims to safety .
Joker appears in the Batman series.