Eviluder is a huge man, with muscular arms and a punk style. He has a spiked Mohican and stars in his forehead and belly. He has no eyebrows and a large nose. His Duel Gazer cover the right half of his head, and he covers his mouth and neck with a mechanical-looking device, giving him some resemblance to a cyborg. His D-Pad is a standard model. Also, he wears no shirt, but a large dark cape instead. His Main Deck and Extra Deck slots are located at the front of his belt, with a aircraft-related device separating them. Eviluder wears dark pants, boots and bracelets.
One day, the Numbers Club is gathered at Cathy's mansion, when a big monitor detects a huge source of energy coming from a Duel involving a "Numbers". Tetsuo Takeda rushes over there, and finds Eviluder. They Duel, but Tetsuo loses, and is seriously injured, having to be hospitalized right then.
The following day, as Yuma Tsukumo is going back home from school, Eviluder appears, introducing himself as Dr. Faker's #1 Fleet Commander. He and Yuma then begin a Duel.
Although Eviluder quickly overpowers Yuma with his "Number", Yuma managed to win with a card he got from Tetsuo. As he loses, Kyoji Yagumo shows up and tells Eviluder that he doesn't need incompetent people, and that the moment he became his subordinate, his "pet" - a spider - was already haunting Eviluder's heart. Eviluder promptly screams and falls to the ground, as the spider attacks his heart.