Abyssal Headlesses

Created by Orcus from the corpses of Demogorgon's subjects when he began reshaping Abysm to suit his will, these horrors now stalk the burning jungles of the 88th layer of the Abyss.  They mindlessly kill all they encounter other than their own kind.

These horrible maimed wretches are as varied as the demons of the abyss in appearance, but all share the trait of having no head - just a bloody stump for a neck.  

Abyssal Headless CR 15
CE size large monstrous humanoid (outsider, undead)
Init: +1 Senses: tremorsense 60 ft.
Languages: none

AC: 30 (+1 dex, +20 natural, -1 size) touch 10, flatfooted 16
HP: 199 (HD 30d12)
Immune: mind-effecting and illusions, fire, poison & electricity
Resist: 15 cold, acid & sonic
DC 15 / magic
Fort: +18 Ref: +9 Will: +13

MV: 40 feet
Attack: claw +28 (1d8+12) or greatclub +27 (2d8+18)
Full Attack: 2 claws +26 (1d8+12) or greatclub +27 / +22 / +17 (2d8+18)
Attack Options: improved grab, rend, combat reflexes
Space / Reach: 10 ft. / 10 ft.
Base Attack: +15 Grapple: +39

Abilities Str 34, Dex 10, Con -, Int -, Wis 14, Cha 6
SQ: tremorsense 90 feet, senseless, undead traits
SA: improved grab, rend
Feats: Improved Grapple, Weapon Focus (claws), Combat Reflexes, Iron Will, Improved Natural Armor (7 times)
Skills: climb +46, jump +46

Rend (Ex): If a headless hits with both claw attacks it can automatically rend for 4d6+18 damage.

Improved Grab (Ex): If a headless hits with a claw attack it can start a grapple as a free action that does not provoke an attack of opportunity. Once it establishes the grapple it can either attack with it's claws at a -4 penalty or it can roll a grapple checks to deal claw damage.

Senseless (Ex): having no heads, these creatures are blind, deaf and dumb. Beyond the reaches of their tremorsense, they are not aware of their surroundings.