Medet

Extremely very bad no-good warlord sorceror king. Utterly obsessed with the annihilation of his twin brother Niet, who is also a sorceror king.

Medet's modus operandus in war is to create amalgamated monstrosities out of humans and beasts, relying on power over numbers. His army consists of monsters and beastmen of half-alive flesh, sustained by the illogic of his Dim magic. His magic itself is basically the same as his twin but he's focused it on corruption/mutation, rot, and growing the same freezing crystal as his mother- mostly to try to impress her to join his side in the war. All members of his army are spotted with black decay, and the same stuff runs inside their bodies and "heals" their undead flesh when injured.

Medet himself looks vaguely like a human man but has paper white skin, sharp teeth, three jet black eyes, and two fat white tentacles coming from the back of his head. His hands, mouth, and feet are soft and black and have an exceptionally corrupting effect. In battle he wears white crystalline armour and wields a large longsword of glossy black stone. Following battle after battle and ever evolving strategies of destruction, Medet eventually lost to his bother, and in modern times has been dead for hundreds of years.