Hall Monitor is a Evil Symbol from Disgaea 4: A Promise Unforgotten. The bill for Hall Monitor is unlocked by successfully stealing from an enemy. Extorts items from Senators during hearings by pat down. To extort an item, pick a Senator then press the square button to take a item from a selective list. The items appears to be random. Similar to Discipline Room evil symbol, you have to clear several stages to enable multiple pat downs.