|The battle begins as the Doctor mounts the Type α Mother Computer. Its attacks consist of opening its hatch to launch missiles, using a pincer claw to attack the players, shooting its electric cannon, and firing a ring-shaped laser.|
|After destroying the Type α, the Doctor will switch to the Type β Mother Computer. It attacks by opening its front and firing multiple rounds from its mini-guns, sending out a buzz saw, and launching satellite drones which attack by firing energy projectiles.|
|Once the player successfully destroys the two Mother Computers, he will finally take control of the central machine. This computer's attacks consist of firing horizontal lasers from the left and right, releasing many lasers that ricochet around the screen, and calling two Amadeus Robots that appear from the crevice created by Type β Mother Computer's buzz saw to fire further blasts, shooting laser beams first towards the floor, then at a forty-five degree angle towards the players.|
In Other Games
After Metal Slug 4, it reappears in Metal Slug Defense (ver. 1.38.0) during the "Amadeus Attack" event. The Type α and Type β can be purchased in the game's store via coins collected in the Event Area.
The Amadeus Mother Computer is featured as a Daily Boss on Friday-Saturday. Only the Type α and Type β computers are in this mode. Later, in the Extra Ops "CODE: ASSAULT", both computers reappears as the main boss, again with the previously mentioned computers only.
Unlike Metal Slug Defense, both computers ("α" and "β") are considered one unit (just as the Emain Macha on said game). Once the Type α is destroyed, the Type β will appear from the base, but only if the player has unlocked Skill 2. This could explain the units' expensive AP cost (which is increased to 2000 in Silver, 1800 in Gold and 1600 in Platinum).
An improved version of the Type β machine, named the Type γ (seen right), appears in the "Amadeus Revenge" Extra Ops as an individual unit. It is colored red and gold, and the "18" on the front doors is now a "19".
The central machine makes its playable debut in the "Kung Fu Guru" Extra Ops. A projected version of the Doctor (named the Type: AI) pilots the now hovering machine as part of an experiment regarding sentient A.I. The central machine's long range is dragging two lasers, one positioned horizontally and another vertically. Its special is a shock wave, extended to three waves when Skill 4 is unlocked.
A golden version of said central machine also appears, possessing enhanced stats. It can now also generate a force field around it to provide protection against damage and resistance to stuns.
- The Amadeus Mother Computer is the only boss in Metal Slug 4 that isn't made of recycled sprites from previous games.
- The laser turrets in the third phase of the boss fight is a recycled sprite of the Supervisory Camera.
- The Amadeus Mother Computer and Invader King are only final bosses in the main series which have their own final boss theme other than Final Attack.
- If the player is very close to the Type: α, the energy projectiles will not hit them; instead, the energy projectiles will stay in mid-air until it fades.
- White Baby and First Baby use the central machine's middle part (with the rotating screws) as their floating vehicle.