The 'International Love' singer, 23, shared his Halloween 2012 costume via Instagram, showing him wearing "white face" makeup, a long beard, turban and an ankle-length garment, waving a gun with ammo strapped across his chest, reported Us magazine.
Flanked by his similarly dressed pals (all of them also waving guns around), Brown stares menacingly in the camera for the shot, taken in a parking lot in front of a sports car.
Brown reportedly attended a Halloween party at Hollywood hotspot Greystone hosted by on-again, off-again love Rihanna, whom he attacked in February 2009.
Over the weekend, he is also said to have attended a Halloween party alongside Karreuche Tran, another girlfriend, from whom he split a few weeks ago.