|"This sorrowful robot was created by the Invaders in order to conquer Earth."|
The Brain Robot is a Super Rare large armored unit from the Aliens faction in Metal Slug Attack. Relative to its Metal Slug Defense incarnation, the Brain Robot has improved HP, firepower, and speed - as well as the addition of a stun effect to its special attack.
Parts of the Brain Robot can be found in the Guild Shop (5 parts for 500 guild medals). It can also be found in the Extra and Rare Shops, being sold in sets of 2/3 for 80/120 medals respectively. It can also be obtained as part of a level-up sale.
Wrecked Vehicles (Spread) Grabs a wrecked vehicle and drops it at enemies.
Energy Ammo (Spread) Fires a long-range guided ball of energy, using its electric brainwaves.
Energy Ammo (Spread) Crouches and reveals a cannon from its torso, firing a rapid amount of energy projectiles in a zig-zag pattern.
- With 2 unlocked, has a chance to deal criticals.
- With 3 unlocked, changes to a large electromagnetic field covering a wide area.
- With 4 unlocked, has a chance to apply stun.
|50||35000||38500||42350||46585||51243||* HP might be increased by skills / items or buffs|
| Strengthen Weapon|
Strengthen all attack power by (10%, +0.5% each level).
| Full Spark|
Special Attack's critical rate will become (20%, +0.5% each level).
| Arc Thunder|
Number of Special Attacks will increase.
| Electromagnetic Restraint|
When a Special Attack hits, there is a (10%, +0.5% each level) chance that the enemy will be stunned.