The material below is Open Game Content from a 3PP Source
This enormous, bestial demon combines the worst aspects of a bear, a mantis, a wolf, and a reptilian humanoid.
Shemhazian (CR 16; 76,800 XP)
CE Gargantuan outsider (chaotic, demon, evil, extraplanar)
Init +4; Senses darkvision 60 ft., detect good, scent, true seeing; Perception +36
AC 31, touch 11, flat-footed 26
(+4 Dex, +1 dodge, +20 natural, –4 size)
hp 246 (17d10+153)
Fort +19, Ref +11, Will +18
DR 10/cold iron and good; Immune electricity, poison; Resist acid 10, cold 10, fire 10; SR 27
Speed 40 ft., climb 20 ft., fly 60 ft. (good)
Melee bite +25 (2d6+12 plus 2d4 Strength drain), 2 claws +25 (2d6+12), 2 pincers +23 (1d12+6), tail slap +23 (2d6+6)
Space 20 ft.; Reach 20 ft. (30 ft. with tail slap)
Special Attacks paralyzing gaze, rend (2 claws, 2d6+18)
Spell-Like Abilities (CL 15th; concentration +18)
Constant—detect good, fly, true seeing
At will—greater teleport (self plus 50 lbs. of objects only), invisibility, telekinesis (DC 18)
3/day—clairaudience/clairvoyance, mass inflict serious wounds (DC 20), prying eyes
1/day—blasphemy (DC 20), summon (level 5, 1 shemhazian 30% or 1d4 vrocks 60%)
Str 35, Dex 19, Con 29, Int 10, Wis 26, Cha 16
Base Atk +17; CMB +33; CMD 48
Feats Awesome Blow, Combat Reflexes, Dodge, Improved Bull Rush, Improved Vital Strike, Lightning Reflexes, Multiattack, Power Attack, Vital Strike
Skills Bluff +23, Climb +20, Fly +2, Heal +28, Intimidate +23, Knowledge (religion) +20, Perception +36, Sense Motive +28; Racial Modifiers +8 Perception
Languages Abyssal, Celestial, Draconic; telepathy 100 ft.
Environment any (the Abyss)
Paralyzing Gaze (Su) Paralysis for 1 round, 30 feet, Fortitude DC 21 negates. Evil creatures are immune to this effect. The save DC is Charisma-based.
Strength Drain (Su) A shemhazian demon deals 2d4 points of Strength drain with each successful bite. A DC 27 Fortitude save reduces this amount to 1d4 points of Strength damage. The save DC is Constitution-based.
Although nearly all the horrors of the Abyss prey upon one another in an endless, eternal bloodbath, shemhazians are predators among predators. They are more intimidating and physically powerful than most demons, combining the features of numerous insectile and bestial hunters into one massive, deadly form. Although they don't require sustenance, shemhazians take perverse delight in mutilating and eating their victims.
A shemhazian stands 35 feet tall and weighs 12,000 pounds. They form from the sinful souls of torturers and those who enjoyed mutilating living victims to death.