Groot

"I am Groot!"

- Groot's catchphrase

Groot is one of the main characters in Marvel Cinematic Universe's Guardians of the Galaxy franchise. For unknown years, Groot became the best friend and muscles for a raccoon by the name of Rocket Raccoon. After sacrificing himself to save his family, Groot later regrew into the entity known as Baby Groot.

Pre-Guardians of the Galaxy
Groot comes from a planet known as "Taluhnia, ", but eventualy leaves his homeworld and becomes a friend of Rocket Raccoon's and becomes his personal muscle. Over the years, Groot 3 counts of grievous bodily harm, 15 counts of escape from incarceration and 3 counts of mercenary activity

Bonding with Peter
At an unknown point, Groot grows out of his pot. He begins bonding with Peter and Rocket, flying on Quill's back and all three having the time of their lives.