The Rebel Gigant is the sixth boss from Metal Slug 7.
A huge mech which was developed by the Future Rebel Army and brought into present day. It was specifically designed to be controlled by Demon Seargant. Despite of its huge body and very tough armor it possesses great agility. It is also equipped with various weaponry such as homing missiles and floating mines.
Its attacks vary from firing rockets from the shoulder to jumping off screen and sliding into the player's Gigant. It is fortunate that death here allows another Slug Gigant to be employed after respawning (the Slug Gigant's destruction kills the player), as the Rebel Gigant would easily defeat the player otherwise. Note however it is possible to fight and defeat this boss on-foot using nothing but a pistol through a War Room mission.
MK II: The upgraded variant of the predecessor, ridden by an enraged Allen O'Neil, appears only in Metal Slug Attack.
- This is the only time Allen is not holding his M60 as a weapon, and has his hands on his hips.
- Though after he is defeated, he can be seen firing it in defeat.
- This is also the second time Allen appears as a boss, rather than this usual mid-boss status.
- In Metal Slug Defense. The Rebel Gigant was an unlockable unit in 1.32.0 Event world Release the Giant sleeping weapon. The Rebel Gigant's special move is dashing forward and crushing an enemy with its size, this attack appears in both MSD and MSA. The unit is now purchasable in the Shop for 500 Medals.
- Also, The Rebel Gigant's official name was confirmed in MSD 1.32.0 update.
- In Metal Slug Attack the Rebel Gigant is featured in an unlockable Rare Boss stage, with no name given. As of 1.20, Rebel Gigant is now a playable unit which requires 80 parts to unlock it. Acquisition of the unit can only be found by the Medal Crank (or a possible rare chance earn-able in POW Rescue).
- When all skills unlocked, Rebel Gigant have chance to stun enemies with using any attack, and special attack is changed, previously it dash forward and then jump backwards,when upgraded, after dash forward it will jump forward, crushing air unit and land as well