Bommer is a physically well-built Duelist first met in the Fortune Cup tournament, battling first against Lua (dressed as Luca), then again in a Turbo Duel against Yusei. He apparently originates from arid Central America, which Goodwin used Bommer's village as the site of an "experiment" to summon the Crimson Dragon, that completely destroyed the village seen in a flashback. Enraged at not being able to help his younger brother and sister, Bommer decides to take revenge on Goodwin for his village's destruction. Bommer uses his Duel Runner to rocket toward the box room, intending to kill Goodwin, Jeager, and Jack. Yusei attempts to stop him, but one of the spikes on Bommer's Duel Runner flies off and crashes into the box. Goodwin catches it with his prosthetic hand. Bommer is arrested by Security after his assault on Goodwin. His deck is fairly solid, focusing on his three "Reactor" monsters, who can inflict 800 damage the first time their opponent Summons a monster, or activates a Spell or Trap card each turn. His Ace Monsters are his "Flying Fortress SKY FIRE", which is a combination of his three Reactor monsters using the Trap card "Delta Reactor", and his Synchro Monster "Dark Dive Bomber". He is voiced by Keiji Hirai in the Japanese version.