File:Assy Nero MSA idle.gif The Assy Nero is a Super Rare unit in Metal Slug Attack, first appearing in the Extra Ops titled "Golden Soldier". Currently, Assy Nero's parts can be obtained through the Regular Army's second chapter in Another Story dubbed "The Sand Kingdom and the Golden Hero". When Assy Nero, Big Shiee, and The Keesi II are placed in the same deck, they form the "Second Rebellion" team, lowering their AP costs by 15%. The team bonus is helpful with a Silver or Gold framed Assy Nero given its higher AP costs compared to the Big Shiee and the Keesi II.