Isaac

Isaac (イサアク, Isaaku)

Dark Djinn
The Dark Djinn that Isaac drew his power from was Dunya Mustashim.

Dark Household Vessel
Al Kaus Kauza (Black Magnet Armor)

It gains it's power from the Dark Djinn, Dunya Mustashim. Al Kaus Kauza repels the strong magnetic forces between the Earth's surface and it's armor. This results in superhuman acceleration.