Kiri Hyouryuu  

Grim Reaper, Third Omni Water Lord Miserea, 氷竜 キリ / 三角水王 ミセリア / 死神

The third Omni Lord from Dungeon World is named Miserea. He's one of eight such lords. Since he couldn't return home, he chose to live as a human with an alias of Kiri Hyoryu. For many years, Kiri manipulated his own memories in order to fit into human society. Stein Blade Joker was his companion monster and guide throughout this process.