There's probably no Marvel catchphrase stuck in the public consciousness more right now than, “I am Groot,” but as it turns out, that's not what he started saying. This happened in the Secret Wars tie-in The Infinity Gauntlet. The story and art were handled by Dustin Weaver with a script by Gerry Duggan.
On the amalgamated planet Battleworld, one of the realms was destroyed by a swarm of bloodthirsty bugs. They were unleashed by Thanos as a plot to collect all of the Infinity Stones. A group made up of Star-Lord, Gamora, and a family of Nova Corp members led by a girl named Anwen tried to find the stones before the Mad Titan. Their search brought them to a forest, where they believed one of the stones was located. Tracking the stone brought them to one tree in particular, where they believed the stone was somewhere inside.
Related: Vin Diesel Is Recording Groot Dialogue For Upcoming MCU Projects
As it turns out, this tree was alive. Of course, this tree was the fan-favorite Guardian of the Galaxy Groot. In this story, the Guardians hadn't been assembled yet, so this was the first time they were put together. At first, Gamora believes someone is hiding inside the tree, but the tree shocks everyone when it reveals it has eyes. While contemplating where the stone is, Anwen utters, “hmmm,” while her brother thinks the tree grew over the stone. Finally, they think the stone is at the tree's roots. Putting all these various words together spells out “eye hmmm grew root.” The tree repeats this, which one Anwen believes he was saying, “I am Groot,” and so a catchphrase was born.
In the mainstream Marvel universe, Groot is part of the species called the Flora colossus. Their repetitive speech is due to a stiff larynx that causes
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