The only thing Groot seems to be capable of saying is "I am Groot", perhaps because he has yet to learn how to talk casually like everybody else. Groot is usually very gentle and warm, displaying kindness towards innocent life. However, he can also be merciless and brutal towards his enemies, especially if they threaten his friends.
As a kid, Groot displays more comical, sometimes mischievious behavior, and would usually prefer to outwit his enemies in cartoonish fashion.
- The use of the "kid, teen, and adult" titles for Groot's three forms throughout his appearances in TTR mirrors that of Gohan in Dragon Ball Z.
- Kid Groot's voice is the same as Cleveland Brown Jr.