Groot was a Flora colossi from Planet X, the capital of the branch worlds. He did not get along with his fellow saplings, instead preferring the company of the "Maintenance Mammals" who the other saplings treated with prejudice. After Groot killed another sapling to defend a maintenance mammal it was brutalising, as well as releasing a human subject that was kidnapped for scientific purposes, he was exiled from the planet by the "Arbor Masters." With no place to go, Groot set to explore other galaxies and became a key member of the Guardians of the Galaxy.
