From a tree-like creature to a beloved character, Groot has come a long way in the Marvel Cinematic Universe (MCU). Growth phase The transformation in Guardians 2 In Guardians of the Galaxy Vol. 2, Groot underwent a significant transformation. This time, he was depicted as Baby Groot, a younger version who displayed more personality and emotion. Emotional impact Emotional depth in Avengers: Infinity War Groot's character took on new emotional depth in Avengers: Infinity War when he stood alongside other heroes against Thanos's forces.