| 80 |
|"New Alien Invasion!|
They attack from the skies with their ring lasers."
The UFO Invader is a playable unit in Metal Slug Attack.
It is similar to the Mini U.F.O., but is much stronger. It is useful among high-leveled players when it has unlocked 4, it leaves the battlefield, giving AP to the user in the process. When maxed out at level 50, the player will obtain 200 AP (provided that it doesn't get destroyed), netting a gain of 120 AP for each UFO Invader that successfully leaves the battlefield.
|50||2100||2310||2541||2795||3074||* HP might be increased by skills / items or buffs|
| Strengthen Weapon|
Strengthen all attack power by 10% (+0.5% each level).
| Armor Support|
HP of Invader are increased by 50% (+1% each level).
| Attack Support|
Power of all attacks of Winged Invader are increased by 30% (+1% each level).
| Return to Mother Ship|
When a certain amount of shots is fired leaves the screen, 100 (+2 each level) AP will be recovered.