Belial, Lord of Fire

With their flaming wings and skull-like countenance, balors are among the greatest and most feared of their kind.

Special abilities
A balor is immune to poison.

The weapon used by this creature is vorpal with a DC of 14. This creature can use several spell-like abilities with a caster level of 15. The abilities usable six times per day are darkness, fear, greater dispelling, and wall of fire. The abilities usable once per day are fire storm, implosion, and summon tanarri.

When killed, a balor explodes, dealing 50 fire damage to all creatures (and doors) in a area. Spell resistance applies, but the details of the check match the last spell the balor cast, not this explosion. (In particular, if the last spell was summon tanarri, then resisting the explosion is automatic; if the balor died before casting any spell then the explosion cannot be resisted.) Victims are allowed a reflex saving throw (DC can range from 14 to 22 depending on the last spell) for half damage. (This is identified as a fireball spell in the OnSpellCastAt event.)