Gildas is part of the Regni tribe and is Queen Antedia's only son and heir to the throne. As ordered by the Druids, a wedding is arranged between Gildas of the Regni tribe and Kerra of the Cantii tribe in attempt to unite the two conflicting tribes. This wedding soon is ended by violence ending Antedia's bloodline, leaving her seeking revenge on the Cantii.
Gildas was killed by the Romans when General Aulus Plautius betrayed the Regni and attacked them with catapults and arrows lit with fire. A large bolt struck Gildas when he, Antedia, and some of her guards were fleeing for safety. He died while his mother sobbed, cried, and cursed the Romans.