Yeetamesh

An "if" scenario in which Gilgamesh could be corrupted by the Grail.

In this form, he is no longer the King of Heroes, but a mad King of Yeets, who exists only to yeet and dab on the haters.

He is usually summoned by his master, Dark Overlord Zalt.

There is a theory going around that he is the First Horseman of the Apocalypse, Pestilence.