Temporary brief (which in this case might be permanent!):

Identity: SECRET.

Origin: Adaptagenic serum experimentation.

Affiliation: None, no sanction

Description and Powers:  The product of private medical experiments gone horribly wrong, his physical enhancement is transient at best.  He only appeared once as a huge, raging, furious behemoth.  The primary observed characteristics during this one encounter were vast strength, vast durability and indescribable anger.

No known affiliations.  Whereabouts unknown.

(To, um, uh,... right.  Well whoever is responsible for this guy, uhhhhhh,... nevermind,...)