Chlorseraph served as a guardian knight of Fluora Spodumene, alongside his brother, Clinoseraph. He appears to serve Creed Graphite, as Creed seeks to free his mistress, Fluora, from the seal on Gardenia. He has an interest that borders on obsession toward Kunzite, and he harbors a deep resentment toward Lithia Spodumene for the attention and loyalty she receives from Kunzite. According to both Kunzite and Chlorseraph himself, he and his brother are Ace-type mechanoids, the strongest battle-oriented type, and they are also capable of linking with each other to increase their combat abilities in a similar manner to the Spiria Link abilities that the protagonists can use. Chlorseraph serves at the attack half of the duo, with his dual-sword Soma and volatile personality.