Combat Sentry

Originally created by the Guardians, but has since been incorporated into several Cybertronian factions. Combat Sentries are heavy infantry troopers who sometimes serves as guards for places of importance, and are one of the oldest mass produced Cybertronians ever developed.

They transform into a Cerebus Combat Droid

History:

Combat Sentries were originally created during the Guardian era, where they served as Police members and bodyguards for high ranking officials. Functionist Combat Sentries defended Technminus cold constuction facility when it was attacked by a Decepticon force led by Rapidfire [The Final Functionist]

Notes:

Their is based on FOC Guardians