Big Star Brain Maxima is the boss of the third secret level from Star Soldier: Vanishing Earth.
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Big Star Brain Maxima is a heavily armored variant of the original Big Star Brain. It attacks by shooting a barrage of round bullets from its back turrets, fire blasts from its frontal guns, lasers from its middle turrets, slow moving homing missiles from its side openings and huge laser beams from its frontal cannons. Once only the core is left it shoots a laser which creates a explosion trail, moving it in the player's direction.