This is a list of some sprites that were not used.

Achilles and Tabomba

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POWs that were supposed to support the player with powerful guns but always stay behind you. The one on the left is Achilles, and the fat one is his comrade, Tabomba. Both unused characters from Metal Slug 5

Stone Turtle


A midboss planned for Metal Slug 5, but was scrapped due to the game being rushed. Fans speculate that it was meant to replace the Mammoth Tower.

The lore states that the Ptolemaic Army had discovered the Stone Turtle and were excavating it, but the Ptolemaic War had already ended by the time it was fully excavated.

It is an obtainable unit in Metal Slug Defense and Metal Slug Attack, complete with animations.

Sand Simon


An unused rideable vehicle in Metal Slug 1, but was scrapped for currently unknown reasons. It is speculated to be a prototype of the SV-001. Fans even speculate that Rebel spies stole data on the Sand Simon and developed the Di-Cokka.

Even more evidence of this exists as one of the early designs for the Di-Cokka shows it with two cannons, just like the Sand Simon.



The real final boss of Metal Slug 5, scrapped due to the game being rushed.

The Ptolemaic Boss is the same Native that was struck by lightning in the cutscene after beating the Metal Rear.

This unit is eventually obtainable as part of a special event in Metal Slug Attack. Like the Stone Turtle before him, he is now a useable in an actual Metal Slug game, complete with animations and a proper name as well.

His lore mentions that he's a mysterious priest who manipulates the Ptolemaic army from the shadows. He alone annihilated the 'Red Goblin' secret society.

The Jet

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A undefined prototype that may be a Slug or an enemy weapon.

It resembles a Messerschmitt Me 163 Komet, a German WWII fighter.

Scrap Fan


A unidentified object, possibly from a large machine or scrap.

Random Red Guy


An old man planned to be used in one of the Metal Slug X's unused stages. He would scold the player when close to his window and will react when fired upon.

Secret Image


4 secret images.

What can be seen is a Zombie Eri, an unused enemy with a gas mask, a Rebel Soldier throwing a pipe bomb similar to the ones the players use, and a Japanese Soldier relieving himself.


The Nazca logo is not used, as SNK had already bought the license to the Metal Slug franchise.

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