KH3 should have a world where Leon is in the 101 Dalmatians world. You have to collect 99 puppies in 30 seconds. When the timer hits 0, it just says run, and you see Leon in the distance using his ultimate weapon.
Sora, walking through the Dalmatians’ house: Wow, I can’t believe I got all these puppies! *walks into a room to find Leon buried in a massive cuddle pile of puppies, laughing with blissful joy* Sora: Leon? Leon: 😳 *immediately stands up and tries to regain his composure* ‘Sup.
The backstory why the puppies gone missing. Rinoa: DALMATIAN CANNON!!! *fire each puppies, but miss the target midair that end up in different world* Squall/Leon: NOOOOOO!!!! THE PUPPIES!!!! WHAT HAVE YOU DONE!!!! RINOA WHY!!!!