Ishbak

Ishbak is an antagonist in the Castaway campaign, working with Azrik Al-Hassid and the cyclops Enki for a mysterious purpose.
Ishbak Asharin was a King of Azathica. At some point, Ishbak acquired great power from an unknown source, and was transformed into an immortal lionine creature, resembling a combination of a human and an Anzu. He later schemed with the High Priestess to open a great pit to the Abyss, dooming the city forever. Ishbak is the only known survivor of this disaster.
At some point, Ishbak was imprisoned in the great interdimensional prison Nazareen. He was later seemingly freed and entered an allegiance with Azrik and Enki.
Ishbak is a powerful warrior, possessing superhuman strength and a magical glaive and shield. He also is an Arcane Mage of considerable skill.