When the first HU Commander crossed the line and Frank Lawler took command of Heroes Unite to bring her and Nemesis into custody, the new Commander brought in Arsenal and B.A.S.S. from his Armoured Soldier to assist.
During the attempt, B.A.S.S. was brutally murdered by Nemesis in his new identity as Stormfront.
B.A.S.S. wears a suit of exoskeletal armour ("Bio-armoured-Super-Soldier" or "Armoured Soldier Mach II. Its exact capabilities are unknown, but the suit is significantly more advanced than the "Armoured Soldier Mach I" Arsenal Suit (but less so than Arsenal's new "Crescendo" exosuit).