Monspeet is a gentleman of sorts for a demon and hates rude and ill-mannered people. He acts as an attendant of sorts to Derieri, always being by her side and catering to her needs. He would translate her quick and crude phrases with detail and shows a deep care by staying by her whenever he can. He is not one for immediate violence and would prefer for most to surrender rather than fight even if he was to crush the enemy. There is an exception in Meliodas' case however as he had his Purgatory Flame Bird home in on him upon merely sensing the latter's presence. The only other instances he resorts to violence is when Derieri is in danger. He likes to watch and think rather than act, often making comments to himself. He has a medium-low pitched voice.