Mascarun

Mascarun, also known as Mascarun of the Blade (刃のマスカルウィン), is a Genius of the Third Hour and the Genius of Death. So far, he has only appeared in the Log Horizon TRPG.

Appearance
Mascarun appears as an undead swordsman wielding a large, black-bladed katana. He has black eyes and hair, and dons a black coat on top of black clothes. He has an ominous yellow aura that summons undead monsters.

Synopsis
Mascarun originally spawned in a certain ruin located in the northeast region of Eastal. Around the ruin, the plants have withered and many undead monsters wander the area. Since then, however, he has headed into Holy Empire Westelande territory, leaving undead monsters in his wake.

Abilities
His prowess is in his swordplay, one of his greatest features being a continuous attack without any break. Furthermore, when someone looks into Mascarun's eyes, a scene of his/her death is displayed in his eyes.

Trivia

 * In his Log Horizon Database entry's tags, he is labeled as a Master Swordsman, like Soujiro Seta and Takayama Misa. Because he is a monster, however, it can be assumed that this is simply talking about his skill with the blade.