Cyberdemon

The Cyberdemon is a demon of immense power and furiosity and will be the main antagonist of the upcoming crossover, Kingdom Hearts: DOOM.

History
Virtually nothing is known about it's origins or how it gained the cybernetic implants it possesses. However it is presumed to be the demon in charge of the invasion that occured at the UAC base on Mars and later the other worlds as the result of the use of experimental portal technology. Because of this, it can also be considered partly responsible for causing an invasion even worse than the Heartless invasion caused by Maleficient.

Appereance
The Cyberdemon is seen as a large towering demon (it's size possibly equalling to that of a Darkside Heartless if not, slightly smaller or bigger). The demon also has cybernetic components of unknown origin implanted on to it's body (presumably due to either being gravely injured or as a way to advance it's lethality prior to the invasion) with the most obvious being it's right lower leg, the large rocket launcher in the place of it's left arm, and a large blue-lighted object on it's chest which is possibly allows it to survive. The demon also has a large claw on it's right hand, for it which it is presumably for melee combat.