For instance, the Hammerhead corvettes that are seen in Rogue One: A Star Wars Story originated in Knights of the Old Republic. Over the years, various parts of the Knights of the Old Republic series have found their way into the Star Wars animated shows, movies, and canon video games. Revan was the main character in BioWare's Knights of the Old Republic video game, which itself is part of Star Wars Legends but has been a story that fans have wanted to see acknowledged in some way in the overarching Star Wars franchise.
Star Wars: The Rise of Skywalker officially made Darth Revan, along with a group of other ancient Sith Lords, part of Star Wars canon.
