Talpa is the bad guy in the Ronin Warriors series; a demon who with help from Badamon and the Nether Spirits, took over the Nether World. Talpa was challenged by another demon, Saberstrike, but defeated/scared him. When Talpa decided to takeover the human world 1000 years ago, he was defeated by The Ancient who separated the Demon's soul and body. While his soul returned to the Nether World, his body was melted and crafted into the ten samurai armors used by the Ronin Warriors and the Warlords, whom Talpa recruited.
As a giant floating head, Talpa wished to claim all of the mystical armors to be whole again and resume his plan to take over the world. He made his move when five Confucian virtues are no longer actively practiced by most people in present times, making it easier for the Demon Lord to achieve his plan. He succeeded in his resurrection by eating all who where in the armors, but Ryo managed to invoke the power of 'Inferno' and seemingly kill Tapla, releasing the Ronins and Warlords.
But Tapla survived, with his physical form intact, now intending to take over by obtaining the Inferno Armor, even if it meant the remaining Warlords in his service would die as well. But through the combination of the Armor of Inferno, the Ferbor Swords, and the Jewel of Life, Talpa was finally defeated for good.