Guardians of the Galaxy Vol. 3 is a movie that was specifically made by James Gunn with the intention of revealing the backstory of Rocket Racoon, but there is one notable question that the blockbuster doesn't answer: how did Rocket first meet Groot? The two characters are already friends when we meet them in Guardians of the Galaxy, and the origin story featured in Vol. 3 doesn't cover that part of the diminutive hero's history. Thankfully, Gunn isn't just letting that stone go unturned, revealing key details about Rocket and Groot meeting while discussing a short film that never got made.
The filmmaker has explained everything on his personal Threads account. Gunn was asked by a fan if he could discuss the history of Tibius Lark – a name you can see listed among Groot's known associates after he is arrested in Guardians of the Galaxy – and the writer/director responded by delivering a three-post answer. He started by saying that there was a short film he wrote about Rocket and Groot prior to the release of his first Marvel blockbuster and noted that it featured the characters locked up together in a prison:
