Mask of Light and Mask of Darkness

Lumis and Umbra/Mask of Light and Mask of Darkness (光の仮面 Hikari no Kamen; 闇の仮面 Yami no Kamen) are members of Marik's Ghouls organization. They pride themselves on being an unbeatable tag team. As their names suggest, their tag-team deck is composed of Mask cards that weaken and manipulate the opponent's cards while lowering their life points.