In the end, while the High Evolutionary plays a role in Rocket’s making, it’s thanks to Batch 86 that he can become the Captain of the Guardians, ready to sacrifice himself to protect those who need the most.

Source: https://collider.com/guardians-of-the-galaxy-3-rocket-raccoon-origin-explained/

The Guardians must save Rocket’s life from his dark past coming back to haunt him.

Source: https://techcrunch.com/2023/02/13/super-bowl-2023-movie-trailers/

The High Evolutionary is Rocket’s creator, and he wants him back.

Source: https://www.monstersandcritics.com/movies/guardians-of-the-galaxy-vol-3-review-heartwarming-and-mean-spirited-moments-clash-in-this-final-mixtape/

Via flashback, the film details Rocket’s origins: he’s part of The High Evolutionary’s experiment to create an advanced species.

Source: https://variety.com/2023/artisans/news/guardians-vol-3-breaks-world-record-most-prosthetics-1235610725/

While it’s easy to use headcanon to justify the police mistaking Rocket’s home planet, it’s impossible to justify the Lylla Easter egg.

Source: https://collider.com/guardians-of-the-galaxy-3-easter-egg/