ne gargantuan daemon fiend 

Perception +33; darkvision, true seeing, tremorsense (imprecise) 120 feet

Languages Common, Daemonic; telepathy 100 feet

Skills Athletics +40, Intimidation +38, Religion +34

Str +10 Dex +6 Con +7 Int +2 Wis +6 Cha +8

Items soul gem (4)

AC  44; Fort +35, Ref +32, Will +34

HP 450; Immunities death effects; Weaknesses good 20

Aura of Doom (aura, death, divine) 60 feet. Any creature that begins its turn in the aura is doomed 1 for as long as it remains in the aura and for 1 hour thereafter.

Speed 35 feet, burrow 35 feet, fly 40 feet

Melee [>] jaws +38 (evil, magical, reach 10 feet), Damage 4d12+17 piercing plus 1d6 evil and Grab

Melee [>] claw +38 (agile, evil, magical, reach 15 feet), Damage 4d8+17 slashing plus 1d6 evil and Grab

Divine Innate Spells DC 42, attack +34; 10th cataclysm, massacre; 9th disintegrate (×3), disjunction, wail of the banshee; 5th dimension door; 4th dimension door (at will); 1st detect alignment (at will, good only); Constant 

Apocalypse Breath [>>] to [>>>] (divine, negative) The daemon expels a shrieking black cloud of smoke from its mouth in a 120-foot line or a 60-foot cone (or both a line and a cone in the same direction if it spends 3 actions). Living creatures in the area take 24d6 negative damage (DC 45 basic Reflex save) The olethrodaemon can't use Apocalypse Breath again for 1d4 rounds.

Soul Crush [>>] (manipulate) Requirements The olethrodaemon has a soul gem; Effect The olethrodaemon crushes the soul gem in one hand and regains the use of Apocalypse Breath or any one of its innate spells.

Swallow Whole [>] (attack) Huge, 4d10+10 bludgeoning and drained 2, Rupture 43. An olethrodaemon has numerous stomachs connected by labyrinthine digestive organs. Swallowed creatures cannot Escape, but can attempt to cut their way out with a 1d6 roll. On a roll of 1–3, the creature cuts into yet another stomach. On a roll of 4–6, the creature manages to cut its way out of the olethrodaemon.

Bestiary 2, page 63.