Scarred Nova

Scarred Nova, who is also known in Nazca as the Crimson Devil, is the last and strongest of the Earthbound Immortals. It is known to be a remorselessly brutal demon so ruthless that the Dark Signers did not dare to attempt to use its power. As such, it only appears in the series long after the defeat of the Dark Signers, during the World Riding Duel Grand Prix, where Jack unites its power with his own Burning Soul to create Scarred Nova Dragon.

Biography
In its true form, it single-handedly fought against the Crimson Dragon 5,000 years before the other Earthbound Immortals and lost. The Crimson Devil has a fire demon servant, the Familiar of the Crimson Devil, who plans to offer Jack Atlas' soul as a sacrifice, and give his body to Earthbound Immortal Scar-Red Nova, to awaken the Crimson Devil from its 10,000-year slumber. It is said to be associated with the serpent Nazca Line.

It is explained that 10,000 years ago, Scarred Nova was stopped by a legendary Signer who possesed a Burning Soul. Towards the end of the ritual duel between the God's servant and Jack Atlas, Scarred Nova appeared, summoned by his servant in much the same manner as a Dark Signer would summon his corresponding Immortal. Following a timely intervention by the Crimson Dragon, Jack acquires the power of Burning Soul, using it to capture Scarred Nova and transform it into "Scarred Nova Dragon".