This is my submission for the "RIFT Create a Colossus Contest"... you can see the original sketch and final cromohrapy links below the las paragraph of this description.

Name: Abomination Rex
Size: Colosal (a Colosus. XD)
Plane: Death
Concept: A masive undead creature mix of Dinosaur's, Dragon's, and Giant's bones and flesh... Animated by the necromantic escense of the infinite torrent of souls in the plane of death.
Ancient as the plane itself... This creature is the mix of all the souls (their power, pain, hate and fury) of the dead ones and of those fools who die fighting in this place. His flesh imbued with necromantic arcane energies (the ones who creates this plane, and gave birth this abomination) absorbed the corpses of the destroyed undeads and upgrade his power... Some theories says that this creature was not the only one of his kind (in the plane), but due his berserker nature they did fight each other... resulting in this monstruosity, that is, in fact, the fusion of those legendary creatures ,assimilated by a single one (the most powerfull of them).

Technical Performance:
-6 armed creature. 2 of them are dinosaur's heads that can byte, smash or shot beam lasers (is not really a beam. this Ray is a blast of necromantic energy, that consume the life of whatever it touch). The upper Hands are for melee fight or for grab enemies. The short ones form his chest are for close fight and for defense (his chest eye is his main fount of vision... So that need protection).
-3 Brains... even when they are very primitive... the fact of have three make it a dificult oponent... becuase they can react individually or working together. 2 of the are in the dinosaur's heads and the main one is in the head.
-5 Eyes: 2 in heach dinosur's head (like T-Rex, there allow a side view) and a big one in the chest (for frontal View)... Basically this creaturea has a vision of 320º... his back, is his only weak point (If him don´t move his arms for cover that posibility. XD)
-Colosal Tail: that allows a better stand position, and slide attacks, as smashes and grab posibilities.
-Made of flesh and bone... He has 2 skeletons, one internal an an exoskeleton for defense.
-He can´t talk (primitive brain) or made complex strategies (he even will attack other undeads if they are in his way (that doesn´t matter, because he absorv them later)). And due the pain and colera of all the dead souls inside of him... his nature is barbaric and destructive.

Thats all...XD... Just enjoy... This was funny of made.
-Maybe later I made another colossus sketch... mmh... who knows?...XD

Original Pencil Sketch: [link]
Final Cromography: [link]

This was hand drawed with pen (35X50Cm Paper) and digital painted at mouse, with PotoshopSC3. Aprox 18 hours of hard work.

that's all, well... not all. My second entry's link: [link]

"Abomination Rex"'s Concept Art belogs to me (Sannamy), You can´t use nopiece of this... without permision... Yep... that was for the copyright. XD...Just had fun.