Coma Berenices Mei is a saint who appears only in the novel Gigantomachia, created by Tatsuya Hamazaki and Masami Kurumada.
He is one of the 100 children sent by Mitsumasa Kido to Sanctuary to train and get a Cloth but he was actually the first-born. Differently from the others, he hasn’t returned in Japan, but remains in his training place, Sicilia. His master was Cancer Deathmask, a Gold Saint and he obtained the Coma Berenice Cloth that is one of the 4 fabled Cloths of unkown kind (Corona Cloths). He appears in the novel Gigantomachia and fought against Typhon.
His armor is black and seems to absorb light, is neither gold nor silver, nor brass, has a feminine form, lean and agile, a woman from behind, showing her hair, with two large shields on the shoulders like the wings of a crow, a helmet with a tiara. His fighting techniques make use of sharp wires Orichalcum out of armor, that could fix his leg severed by the typhoon. Thousands of these wires around the cave under the mountain in Arima Typhon trapping the seal of Athena with Mei.
Lost Children : With this technique he cuts Pallas into five pieces.