File:Jupiter king.gif The Jupiter King is a playable unit in Metal Slug Attack. Players can obtain the parts through Elite 10-4 (where it serves as the boss of that level), or through the Event Crank. For beginning players, the Jupiter King is obtainable after logging in for 7 days. The Jupiter King is a well-rounded unit, being significantly better than its MK II and mini counterparts. The Jupiter Queen is better than the Jupiter King, due to utilizing its special attack as a standard attack.