Abysm's Dread Kraken

Deep beneath the waves of the oceans of Abysm, Demogorgon's realm in the Abyss, lurks a creature of unfathomable might.  Spawned and nurtured by the Sibilant Beast, Drigular is to a squid what Demogorgon is to a monkey.  Drigular will rise to the surface at his master's bidding to whelm and destroy intruders on Demogorgon's waters.

Drigular
Size/Type:     Colossal Magical Beast (Aquatic, evil, outsider)
Initiative:     +4

Hit Dice:     44d10+484 (726 hp)
Armor Class:     28 (-8 size, +26 natural), touch 2, flat-footed 28
Damage Reduction: 10 / magic
Saves:     Fort +35, Ref +22, Will +18
Resistances: cold & fire 20
Spell Resistance: 30

Speed:     Swim 20 ft. (4 squares)
Attack:     Tentacle +42 melee (4d6+22/19-20) with 10 point power attack
Full Attack:     2 tentacles +42 melee (4d6+26/19-20) and 6 arms +37 melee (1d8+18) and bite +37 melee (4d8+18) with 10 point power attack
Base Attack/Grapple:     +44/+76 (+56 if not concentrating completely on a single target)
Space/Reach:     30 ft./ 20 ft. (90 ft. with tentacle, 45 ft. with arm)
Special Attacks:     Improved grab, constrict 4d6+16 or 1d8+8, swallow whole, smite good (+20 damage 1/day)
Special Qualities:     Darkvision 60 ft., ink cloud, jet, darkvision, spell-like abilities

Abilities:     Str 42, Dex 10, Con 33, Int 21, Wis 20, Cha 20
Skills:     Concentration +58, Diplomacy +7, Hide +0, Intimidate +32, Knowledge (geography) +30, Knowledge (nature) +25, Listen +51, Search +51, Sense Motive +34, Spot +51, Survival +5 (+7 following tracks), Use Magic Device +32
Feats:     Blind-Fight, Combat Expertise, Improved Critical (tentacle), Improved Initiative, Improved Trip, Iron Will, Improved Natural Armor (x7), Power Attack

Environment:     Abyssal Ocean
Organization:     Solitary
Challenge Rating:     20
Treasure:     Triple standard
Alignment:     any evil
Advancement:     21-32 HD (Gargantuan); 33-60 HD (Colossal)
Level Adjustment:     —

Improved Grab (Ex)
To use this ability, the kraken must hit with an arm or tentacle attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict.

Constrict (Ex)
A kraken deals automatic arm or tentacle damage with a successful grapple check.

Jet (Ex)
A kraken can jet backward once per round as a full-round action, at a speed of 280 feet. It must move in a straight line, but does not provoke attacks of opportunity while jetting.

Ink Cloud (Ex)
A kraken can emit a cloud of jet-black ink in an 80-foot spread once per minute as a free action. The cloud provides total concealment, which the kraken normally uses to escape a fight that is going badly. Creatures within the cloud are considered to be in darkness.

Spell-Like Abilities
at-will-deeper darkness, bestow curse, contagion, control weather, control winds, resist energy
3/day-dominate animal (DC 27 Will negates), insanity (DC 22 Will negates)
1/day— unholy aura (DC 23 Fort. or 1d6 strength damage when hit).
Caster level 17th. The save DC is Charisma-based.