Groot is a fictional character that appears in Marvel Comics and was created by Stan Lee, Larry Lieber, and Jack Kirby. Groot debuted in Tales to Astonish #13 in 1960.
He is a member of an alien species known as Flora Colossi, which are tree-like beings with the ability to control and manipulate plants. Groot is unique among his species in that he can communicate using a limited vocabulary of only three words: “I am Groot.” Despite this, he can convey a wide range of emotions and meaning through variations in inflection and tone.
Groot is known for his superhuman strength and durability, as well as his ability to regenerate his body from even the smallest pieces. He has been a member of various superhero teams in the Marvel Comics universe, including the Guardians of the Galaxy and the Avengers.