Trapper is a minor villain in Yu-Gi-Oh! GX. He was hired by Professor Viper.
Trapper is a muscular man that wears an hunter outfit.
Trapper is ruthless Duelist that was hired by Viper. He was sent there to duel Jesse. He steals certain duel cards with duel spirits. He manage to steal Jesse's Crystal Beast Sapphire Pegasus. This causes Jesse to chase after Trapper. Jesse then duels Hunter, but since he doesn't have his Sapphire Pegasus he has a slight disadvantage. Jesse manage to find a way to defeat Trapper, however Trapper threatened that if Jesse attacked, he would rip the card with the Duel Spirit. Jaden then swooped in to the rescue and saved the card, leaving Trapper wide open. This causes Trapper to lose the Duel.
Trapper's deck is called the Hunting Deck. His strongest card is Infernal Blasthound.