Glasyalabolas

An S grade devil affiliated to where Leviathan is king. He is the devil that angels fear meeting the most and believes himself to be a benevolent king who can rule over both Heaven and Hell. But he is known as the most lunatic devil in Hell, and as the most brutal devil in Heaven.

Solely relaxed as the king in any commotion, he is the only devil in Hell who is taller than Mammon and always stands out.