Mother Brain

From SmashWiki, the Super Smash Bros. wiki

Mother Brain is one of the recurring main antagonists in the Metroid universe, along side Kraid and Ridley. "She" is an organic, biological, supercomputer used by a group known as the Space Pirates to plan and lead their operations. Mother Brain was the final boss of Metroid as well as Super Metroid and is commonly considered Samus Aran's main enemy.

[edit] In the Super Smash Bros. series

• She appears as a sticker in Super Smash Bros. Brawl.
• Mother Brain also appears in the background of the Brinstar stage in Super Smash Bros. Melee (SSBM) and Super Smash Bros. Brawl (SSBB).