Rumi Aikawa is a playable unit in Metal Slug Attack, as the third Box Crank unit, introduced in the Extra Ops "Amadeus' Revenge".
Unlike White Baby and Jin, the previous two Box Crank units, Rumi has low health. While she acts more of a support unit and makes up for this deficiency with her special, where she calls a supply helicopter (a Regular Army Helicopter) and tosses Heavy Machine Guns and Bombs.
These item provide buffs for friendly allied units that pick them up. Units will only pick up what they need, so they will not hog all of the supplies. Enemies cannot pick up these items, and they will disappear after short period of time after being dropped.
- Heavy Machine Gun: Provides a 4 second damage buff.
- Bomb: Instantly recharges the unit's special.
While Rumi appeared several times in the main series, the Metal Slug Attack version is the first to depict her as a playable and combat unit.
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