The Assimilation

The Assimilation is a character from the non-canon The Grand Clusterfuck.

Weapons/Abilities
A vast array of ablilities, but only 1 can be active at any given time. For example, at one moment it could walk up walls, the next shapeshifting, etc.

Description
A black humanoid with 4 red eyes. Personality is erratic; it could be murderous, joyful, or depressed at any time. But murderous is what happens mostly.

Biography
It was a failed science experiment. Some random scientists were trying to make a symbiote that could help the military fight wars. It went horribly wrong. Basically it assimilated the scientists and went mad with power. And now it's sorta...insane.