Mammon is naturally greedy and always seeking out opportunities to profit without putting much work.Although he's the second eldest, he acts immaturely when he doesn't get his way and is the biggest troublemaker of the brothers. He's egotistic and prideful, though it seems that it is only a façade to cover up his soft nature. He often refers to himself as "Ore-sama" and "Mammon-sama". "-sama" is a Japanese honorific given to people worthy of the utmost respect, so Ore (crude pronoun for me, I).