Gladius is one of two remaining members of the Luminai. The other, Dawn, was imprisoned by Countess Belladona after a failed attempt on the vampress' life. Gladius ventured to Belladona's Keep to rescue her and was also forced into her service. It wasn't until the War of the Divine Child that Gladius and Dawn were able to escape. They came into possession of the Eye of Proteus and began the process of cleansing the Chaotic Taint from the realm. When the ritual failed, Dawn's life was taken, leading Sarapis to grant her the gift of immortality as Mithraea, Goddess of the Sun.