The Rebel Army is divided into 3 Subcategories:
- The Rebel Army (Rebel Infantry, Hi-Do, etc.)
- The Arabians (Abul Abbas, Assy Nero MKII, etc.)
- The Future Rebel Army (Girida-O Ver.F, Nova, etc.)
The Rebel Army has many versatile units that can be used in both a full-faction and mixed deck. Many of the bosses from the original Metal Slug series are from this faction. They have early anti-air and stun capabilities, a prime example of this being the Wrath Mortar.
Like the Ptolemaic Army, the Rebel Army have decent units, though they have rather poor stun and projectile blocking units compared to the other factions.