The Metroid Queen is the ultimate antagonist of SR388. She is a massive, immobile creature with a powerful bite and the ability to spit acid. This is the final boss battle.
Strategy: The Metroid Queen has two main phases. In the first phase, she will try to bite you and spit acid. Dodge her attacks and fire charged shots and missiles into her mouth when it's open. After taking enough damage, she will retract her head. This is your cue to switch to Morph Ball and roll into her mouth. Once inside, plant a Power Bomb. Repeat this process until she is defeated. Be careful of her acid, which can quickly deplete your energy. Good luck, bounty hunter!