Titan, is a Rock-Type Monster that resembles a man made of earthly material, with armor.
When Jaden and his Schoolmates were trapped in an alternate world they found out that there was an abandoned Submarine somewhere in the middle of the desert. Yubel summoned Titan so he can defend the Submarine. He first dueled Jesse and lost. He retreated, only to return to duel Jaden. He and Jaden dueled each other, Jaden ended up winning the duel. What happened to Titan is unknown.
Titan's deck is a Scorpion Themed Deck. His strongest card in his deck seems to be the 8-Clawed Scorpion, because of it's effect.