|Deep Sand Marine|
|"This is the Sandmarine that evolved in order to get deeper into the ground. Its energy balls are coated by Caroline so that they can face to the huge creatures living at the end of the Earth."|
The Deep Sand Marine is a playable unit in Metal Slug Attack, first appearing in the Extra Ops "Glow in the Dark".
A repurposed Sand Marine, this Sand Marine is now capable of going deep underground. It is simply an enhanced version of the original Sand Marine; in return for a slightly lower AP cost, it has more health, faster speed and a more damaging special, but lower resistance.
It shares the same attack as its original counterpart, apart from its special attack, where it launches falling bombs in addition to performing its close and long range attacks. 4 adds extra bombs to this attack to literally cover all the gaps that would be there if it was not unlocked. As such, it excels at destroying air units, though it is just as effective against large ground units.
Full Open Attack (Spread) - Unleashes a barrage of fire at the enemy, using the close and long range attacks (with two less energy projectiles) in addition to sending out falling bombs. Extra bombs are added with 4.
|50||122500||134750||148225||163047||179352||* HP might be increased by skills / items or buffs|
| Strengthen Weapons|
Strengthen all attack power by 20% (+1% each level).
| Equip Anti-Armor|
Critical rate for all attacks will become 10% (+0.5% each level).
| All-Around Armor|
HP will increase by 20% (+1% each level).
| Full Open Attack|
Number of Special Attack will increase.