Luco is the specter of the Heavenly Rise Star. Little is known of him, aside from the fact that he was defeated by Pisces Albafica at a time before the meeting of the 12 Gold Saints. He is the younger brother of Albafica’s master, Pisces Lugonis.
His first goal was to find a way to cure his brother Pisces Lugonis poisonous blood but after becoming desperate for not knowing how to cure the sickness of his dying disciple, Pefko, Thanatos appeared to him offering the power of the flower of the underwold,promising the ability to cure any illness if he would become a specter and use the white lilies to turn everything else that was cured into skeletons or dark nuns.
Luco ultimately dies from Albafica’s Crimson Thorns Attack