Shrouded in mystery, one quickly learns of Mephisto's innate ability to act as if he knows more than what he is letting on. Careful and meticulous, he is like a chess player, always ahead of the game.
He enjoys chaos, and is prone to eccentric moments nestled in between serious moments, making light of a heavy mood and is portrayed as a man with more money than sense, but is very cheap when it comes to spending on others. He loves to eat sweets and he is deeply interested in the Japanese pop culture, proudly stating that he is an otaku (that is, loves computers, anime/manga, and/or pop culture to the point that it negatively effects his social life).
