Malek

Malek is a original character created for Seven Deadly Sins Grand Cross game, though later on appeared in the Four Knights of Apocalypse manga.

Seven Deadly Sins Grand: Cross
Malek reawakens and fight against Merlin and Escanor.

Four Knights of Apocalypse
Malek was one of Ioladio Wellweger's friends held hostage and brainwashed by Arthur Pendragon to make her do his bidding to elimate the Four Knights of the Apocalypse (Group).