Himeno was shown to be a mature and experienced superior. She can stay calm under extremely stressful situations. Denji is the chainsaw fiend , he can transform into chainsaws, he is easy to use, just offer him a kiss and he will do your will. Kobeni is seems to be a crybaby and a weak person, but she has good skils... She just not brave enough... Aki is a cold, professionel devil hunter, he has a contract with fox devil