Bramblestar's imposter

Art Credit
Art by dinojay_arts on Tumblr!

Appearance
It is unknown what is his real appearance.

History
He started out telling Shadowpaw to kill the code breakers, he then possesses Bramblestar and Exiles his Mate and makes Berrynose the deputy, some cats knew he was the imposter, starting off a battle between the rebels and Thunderclan, he then kills Shadowsight and then gets hurt, Shadowsight then came back to life and heals him, and he warns shadowsight it was just the beginning and becomes a prisoner of ShadowClan. it is revealed that the imposter was Ashfur and he kidnaps Squirrelflight to the The Place with No Stars.