Antonov Ma-27 (アントノフMa-27) is the penultimate boss from the original Raiden.
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The Antonov Ma-27 is a large spaceship that launches from the space station that serves as a backdrop for the 7th stage of Raiden. The boss will take flight after having two turret modules attached to it, starting to shoot at the player immediately after. It is possible to destroy the modules before they attach to the boss if the player is fully equipped. The boss will also be constantly aided by crawling drones which move along the iron bars in the lower portion of the ship.