Zixael

Zixael is a glabrezu, a powerful type of demon that resides in the Abyss. It was summoned by the demonic Cult of Zixael, assisted by Emil Teafeather and an unnamed rakshasa.

Zixael appeared to be a herald of some kind, and it awaited an unspecified force underneath the sewers of Neverwinter.

Thea was captured by the cult and used first a summoning anchor and later a mouthpiece for Zixael. The two appeared to be bound by a black summoning stone, which was destroyed by Gell and Isen Silversmoke. After this orb was shattered, Zixael and Thea were both swallowed by an unstable portal that erupted from the broken stone.

Zixael's whereabouts and status are unknown, but it is likely back in the Abyss.