I Am Groot (TV) Cast
The cast of I Am Groot. Updated on June 17, 2025.
13 actors
Vin Diesel
as Baby Groot (voice) (10 episodes)

Vin Diesel provides the voice for Baby Groot, the tiny and mischievous tree-like creature exploring the universe.

Jeffrey Wright
as The Watcher (voice) (1 episode)

Jeffrey Wright lends his voice to The Watcher, an enigmatic cosmic observer.

Dee Bradley Baker
as Terma Baby Bird (voice) (1 episode)

Dee Bradley Baker voices Terma Baby Bird, adding unique vocalization to this character.

Bradley Cooper
as Rocket (voice) (2 episodes)

Bradley Cooper voices Rocket, the quick-witted and technical genius raccoon.

Fred Tatasciore
as Additional Voices (voice) (5 episodes)
Bob Bergen
as Additional Voices (voice) (1 episode)
Terri Douglas
as Additional Voices (voice) (3 episodes)
Scott Menville
as Additional Voices (voice) (1 episode)
Kaitlyn Robrock
as Additional Voices (voice) (1 episode)
Kari Wahlgren
as Additional Voices (voice) (1 episode)
Matthew Wood
as Additional Voices (voice) (1 episode)
James Gunn
as Wrist Watch Voice (voice) (1 episode)

James Gunn provides the voice for the Wrist Watch, adding a humorous touch to the series.

Trevor Devall
as Iwua (voice) (1 episode)
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