It’s possible that, with the four-year gap between Guardians of the Galaxy 2 and Avengers: Infinity War, we could see this massive Groot do some serious damage, and perhaps square off with the Hulk.
Furthermore, Kevin Feige has also teased that Avengers: Infinity War will be set four years after Guardians 2, meaning it will be set in the year 2018, when it will be released, and Infinity War will likely feature the Hulk vs. Groot showdown Vin Diesel has teased in the past, with a fully-grown Groot.
Now that Guardians of that Galaxy 3 has been confirmed, James Gunn has addressed where that movie will take place within the Marvel Cinematic Universe.
While promoting Guardians 2 last month, Marvel Studios president Kevin Feige confirmed some interesting details about the timeline of this superhero sequel, and how it may relate to Avengers: Infinity War, which is currently filming and slated for release on May 4, 2018.