Chronicles of Khaldun: Bread and Circuses
The Executioner is an undead giant created by Lazghul the Lich Lord. Designed to carry out his will, the Executioner is made of several corpses melted together to act as one entity. It carries a massive greataxe, and can apparently regenerate itself by absorbing more corpses.
It would probably be a greater threat had not Resh slain it, although it managed to kill him in the process. A fair trade, perhaps.
Also, credit where credit is due. Image source:
Ochoa, Juan. “The Executioner” (2015). The Cold Ruins of Lastlife, 14.