More Dinosaurs than Isla Nublar (okay, not really, PEACH)

[LOTRfan]

Here's the bare bones. I am thinking at these are the aquatic guardians of Ry'leth, maybe instead of swimming they walk across the ocean floor.



Cthulhusaurus Rex
Gargantuan Aberration (Aquatic)
Hit Dice: 54d8+744; Hit Points: 1,216
Initiative: +14
Speed: 80 ft. (16 squares)
Armor Class: 56 (+44 natural, +6 Dex, -4 size), touch 12, flatfooted 50
Base Attack/Grapple: +39/+71
Attack: Tentacle +55 melee (4d6+20 damage)
Full Attack: 6 tentacles +55 melee (4d6+20 damage)
Space/Reach: 20 ft./15 ft.
Special Attacks: Improved Grab, Swallow Whole, Constriction, Pinning
Special Qualities: Electricity and Acid Resistance 40, Damage Reduction 15/epic, lowlight vision, darkvision 120 ft., scent, Amphibious, Spell Resistance 55, Madness
Saves: Fort +28, Ref +24, Will +36
Abilities: Str 50, Dex 22, Con 31, Int 22, Wis 13, Cha 24
Skills: Bluff +64, Diplomacy +64, Intimidate +64, Listen +64, Search +63, Spot +64, Swim +77, Knowledge (Dungeoneering) +63
Feats: Multigrab, Improved Multigrab, Rending Constriction, Gape of the Serpent, Improved Toughness, Power Attack, Cleave, Great Cleave, Improve Initiative, Weapon Focus (Tentacle), Improved Critical (Tentacle), Overwhelming Critical (Tentacle)
Feats: Epic Toughness (x5), Dire Charge, Superior Initiative
Environment: Any Aquatic
Organization: Solitary (Unique)
Challenge Rating: 26
Treasure: Double Standard
Alignment: Chaotic Evil

With all the horrors that wander the world now, it is hard to think about the ancient creatures that claimed the world long ago. At the beginning of the Material Plane, when most worlds hadn't even formed, the planets were balls of boiling water under the heat of unforgiving stars. Sometime in this era, the Old Ones walked. The Old Ones, a term referring to both Obyrith and Far Realm entity alike. Creatures as old and powerful as Pale Night and Basatan roamed the lands and seas without worry. Nightmares incarnate wandered freely.

Kingdoms of pure Chaos rose and fell. Demon Lords like Illyria and Olvikan controlled large swathes of land. Aboleths and other horrific aberrations were created in the image of their terrifying masters. With all this chaos, they started to fight amongst themselves. Eventually, the Celestials under the control of an Overdeity charged and forced them out of the Material Plane, so creation could continue the way it was meant to. By that point, however, the Lords of Madness had already grabbed hold of the mortal coil.

Deep in the city of Rl'yeh, an extraplanar city that connects the Far Realms to the Material Plane, the Great Old Ones remain. Although deep in a dreamless sleep, they can still influence the world around them. The result of one such influence was the Cthulhusaurus Rex, a creation of the the mighty Cthulhu himself.

Long ago, when dinosaurs still roamed the entirety of the planet freely, Cthulhu experimented on the great beasts. The one with the most successful was a Tyrannosaur, mutated to massive proportions and given fell intelligence. This beast became effectively immortal, and was made guard of the underwater city of Rl'yeh. At this point, he has developed a cult of his own, a fact that the old, insane beast seems either ignorant of or uncaring for. Many cultists of Cthulhu have been known to attempt to bring this creature to the surface world, to wreck havoc and give mortals a taste of the power of the Far Realm Entities. Thankfully, so far all attempts have been failures.

Currently, the beast walks the ocean floor. despite being unable to swim, the Cthulhusaurus Rex slowly walks through the sand, killing anything that dares swim into its path.

Combat
Cthulhusaurus Rex usually attempts to pin creatures before lashing them apart with its tentacles. When facing many foes, it tries to swallow as many as possible.

Constrict (Ex): When grappling a creature, Cthulhusaurus Rex can use its tentacles to squeeze the life out of its foe, dealing 4d6+20 damage.

Improved Grab (Ex): If Cthulhusaurus Rex hits a foe at least one size smaller than itself with a tentacle attack, it deals normal damage and attempts to start a grapple as a free action without provoking an attack of opportunity. No initial touch attack is required. Cthulhusaurus Rex has the option to conduct the grapple normally, or simply use the part of its body it used in the improved grab to hold the opponent. If it chooses to do the latter, it takes a -20 penalty on grapple checks, but is not considered grappled itself; the creature does not lose its Dexterity bonus to AC, still threatens an area, and can use its remaining attacks against other opponents.

Madness: Cthulhusaurus Rex is completely insane. It suffers a -6 penalty to its Charisma and Wisdom scores, and uses its Charisma modifier for all Wisdom-based scores. This is already reflected in the statistics.

Pinning (Ex): Cthulhusaurus can pin a grabbed opponent of up to two sizes smaller than itself to the ground with one of its feet by making a successful grapple check. The pinned creature takes 2d6+20 points of bludgeoning damage per round and cannot move as long as the pin persists. Cthulhusaurus Rex gains a +4 circumstance bonus on attack rolls to hit a pinned target with its bite. Cthulhusaurus Rex can pin one creature at a time.

Swallow Whole (Ex): Cthulhusaurus Rex can try to swallow a grabbed opponent of up to two sizes smaller by making a successful grapple check. The swallowed creature takes 3d8+15 points of bludgeoning damage and 16 points of acid damage per round from the tyrannosaurus’s gizzard. A swallowed creature can cut its way out by using a light slashing or piercing weapon to deal 50 points of damage to the gizzard (AC 32). Once the creature exits, muscular action closes the hole; another swallowed opponent must cut its own way out.

Cthulhusaurus Rex’s gizzard can hold 1 Gargantuan, 2 Huge, 3 Large, 4 Medium, 16 Small, 64 Tiny, or 256 Diminutive or smaller opponents.