Above is a series of cuirass variations, designed to be worn over Brutus' uniform, based on a typical roman cuirass silhouette accented by elements drawn from the armor of the Winged Hussars (Ukraine). Because of the modern yet mythical world the character exists in, I have chosen not to armor him with a full suit of plate-armor. His mobility and modernity is key, which still hearkening back to the classical Roman era in which the character originally lived.
Below are sigil designs, based on variations of "Brutus", "Marcus Brutus", and "KGB" which will be painted or magically inscribed on his armor as a sort of "scarlet letter", an irrevocably outward yet decidedly mystical display of his failings as a patriot and confidant.
Helmet variations (loose)