List of Ready Player One licensed characters (Fanon version)

This is the list of characters who could probably appear in the movie, which also includes characters that will appear in the actual movie.

DOOM

 * Doomguy: An unnamed space marine who fights his way through hordes of invading demons from Hell. He's seen at Aech's side during one match & in the final battle, cutting IOI soldiers with his chainsaw.

Crash Bandicoot

 * Crash Bandicoot: An eastern barred bandicoot who was genetically enhanced by Dr. Neo Cortex & soon escaped from Cortex's castle after a failed experiment in the "Cortex Vortex". He's seen during the challenge for the jade key & in the final battle, spinning at enemies.

Spyro/Skylanders

 * Spyro the Dragon: An energetic, curious & somewhat mischievous dragon with little regard for his own safety. He's seen in the Oasis bar & in the final battle, helping Crash take care of some IOI soldiers.

Ghostbusters

 * Slimer: A green ghost who encounters the Ghostbusters. He's seen in the Oasis' bar & in the final battle, distracting IOI soldiers.
 * Stay Puft Marshmallow: The mascot of a marshmallow company brought to life by Gozer since Ray imagined it as the destructor. He's seen ramping through New York during the race & in the final battle, helping the Iron Giant.

Overwatch
Bandai Namco, Capcom, Cartoon Network/Warner Bros Animation, DC Comics, Disney, Don Bluth Movies, Dreamworks Animation, Electronic Arts, Konami, Koei Tecmo, Level-5, Marvel Comics, Nickelodeon, Nintendo, Platinum Games, Rovio, Sega, SNK, Shonen Jump, Square Enix/Taito Sunsoft
 * Lena Oxton/Tracer: An adventurer who was chosen to test the Slipstream, a prototype of a teleporting fighter, only to be desynchronized from the flow of time, until Winston created the chronal accelerator. She's seen charging into the final battle, speeding out IOI soldiers.
 * Hana Song/D.Va: A pro eSports gamer who was recruited by the Korean government to help quell the robotic Omnic uprising, translating their video game-playing skills over into controlling weaponized mech suits. She's seen during the challenge for the jade key & in the battle, protecting some of the skeletons in Wade's army.