After the final battle against Zangyack Emperor Akudos Gill, the Gokaigers send all of the Ranger Keys, along with the Great Powers, back to their respective owners, leaving them left with their own Ranger Keys.
During the events of Kamen Rider × Super Sentai: Super Hero Taisen, Kamen Rider OOO gives the Gokaigers the Core Medals which become Ranger Keys and transforms the Gokaigers into Kamen Rider OOO's six main Combos [REF].