Hantengu's primary form has a persona of extreme cowardice and agitation. He is easily frightened by what occurred in his surroundings, showing traits of paranoia, fear and delusion. He is always shown to cry out in fear at even the most insignificant things, such as the number of years since the last meeting of the Upper Ranks being 113.
Terrifying, terrifying! It's been 113 years since we were last summoned. An indivisible number. Unlucky and uneven... Terrifying, terrifying! Eeeek!