the attacker wore a bullet - blackened vest under his clothes and a backpack containing a knife , an umbrella and a fake pistol . two other knives were found within the murders scene . the prosecutor noted that the man ' s face was paint white with bloody eyes as he committed the crime , which allowed international media to give comparisons to the joker , the villain from the batman comic . " i have a question , " the killer told the fourth employee he noticed , after this he again assaulted her , and started his run . one female week aid worker attempted to hussein the shooter while everyone locked the doors . the killer stabbed staff trying to carries children to safety .
Joker appears in the Batman series.