The Night Clan is the enemy faction of Regis Nex. Caladbolg created the group to fight against Nex. Many of Nex's old allies have joined for reasons unknown, although it is hinted that it is because of his cruelty. It is implied that Siana, a member of the Night Clan, is the daughter of Serin and Nex. Siana helps to lead Ninurrta over to the Clan.