バレンタイン, Tenkokusei Hāpī no Barentain?) was featured in Lost Canvas in cameos. He was introduced formally into the storyline by being summoned by the fierce judge of the Underworld, Wyvern Rhadamanthys, to whom he shows undying loyalty. Similarly as his portrayal by creator Kurumada, Valentine is also one of the exceptionally powerful soldiers of Hades' army. Along with Basilisk Sylphid, he is part of the elite of the Specters, and also a member of Rhadamanthys forefront squad.
He is sent by the Underworld commander in his stead, acting as Rhadamanthys' substitute, in an important mission to Sanctuary. Instead, Valentine stays at the Saturnus Temple, guarding it meanwhile Rhadamanthys suffers excruciating pain as effect of Alone's blood. Pandora meets with him, wishing to enter the Temple. Valentine refuses, to prevent further loss of face for his commander, and is therefore challenged by the woman, who revels in the Specter's humiliation. He is subjected to torture by Pandora, and he reminisces about his past. Determined to never forsake his loyalty to his lord, and to punish Pandora for her slandering of the Wyvern Specter, Valentine retaliates with his Sweet Chocolate (スウィートショコラーテ, Suwīto Shokorāte?) technique, listed in the Saint Seiya Encyclopedia, but never revealed by Masami Kurumada, which summons the spirits of the harpies, to absorb the lifeforce of the victim. Pandora manages to break free of the attack and vanquishes the Harpy Specter. After his lord Rhadamanthys resurfaces, all Valentine receives from him in return for his loyalty is cruel punishment for his defiance. Valentine then, in disbelief from his lord's reaction, prepares to kill Pandora. His attack is then deflected by Wyvern, who retaliates with his Greatest Caution technique. Valentine finally succumbs, as he desired, being a Specter until the very end. It was revealed, that ten years before these events, Valentine escorted Rhadamanthys on a mission to destroy a village, being then challenged by Taurus Rasgado.