Lumis, known in the manga and Japanese anime as Mask of Light, is a member Marik Ishtar's Rare Hunter organization. He is the Tag-Team partner of Umbra, and together they have Dueled with Seto Kaiba and Yugi Muto. Lumis wears a white-colored, smiling mask on the right side of his face.
Despite his size, he is very acrobatic, and managed to jump to a skyscraper through lower rooftops. In the manga, he tends to say "Got it?" to end his sentences, and dislikes being called "shrimp".