Arc System Works vs Capcom

Arc System Works vs Capcom is a tag-team crossover fighting game developed by Capcom.

Story
The Boundary.

A woman named I-No appears in a different reality in an attempt to keep discovering her true self, only for her to know she is capable to enter not only different worlds, but to also enter places she's not supposed to be in.

Using her deity powers, I-No manipulates reality at her own will, and such actions would eventually caught the attention of the god of destruction Susanoo and the Shinigami Jedah Dohma, who, interested in her capabilities, offered her to join her on her plans.

Juri Han, who happens to get involved into this mess and interested on I-No's scheme, join forces with the trio, but, every one of them has another purpose on which involves they could eventually betray each other.

For her little amusement, I-No summons many warriors to her new world with the sole purpose to see them killing each other in battle, but that hatred would turn into teamwork when a wyvern known as Rathalos, has been unleashed across the multiverse to aniihilate every one of them and expand his domains.

Arc System Works

 * Sol Badguy (Guilty Gear)
 * Dizzy (Guilty Gear X)
 * I-No (Guilty Gear XX)
 * Sin Kiske (Guilty Gear 2)
 * Jack-O' Valentine (Guilty Gear Xrd)
 * Asuka R. Kreutz (Guilty Gear Strive)
 * Ragna the Bloodedge (BlazBlue Calamity Trigger)
 * Makoto Nanaya (BlazBlue Continuum Shift)
 * Celica Ayatsuki Mercury (BlazBlue Chronophantasma)
 * Susanoo (BlazBlue Central Fiction)
 * Kunio (Kunio-kun)
 * Riki (Kunio-kun)
 * Kobayashi (Kunio-kun)
 * Kyoko (Kunio-kun)
 * Misako (Kunio-kun)
 * Billy Lee (Double Dragon)
 * Jimmy Lee (Double Dragon)
 * Abobo (Double Dragon)
 * Burnov (Double Dragon)
 * Jake Hunter (Jake Hunter)
 * Kotaro Minakami (Kowloon High-School Chronicle)
 * Alto Travers (Wizard's Symphony)

Capcom

 * Ryu (Street Fighter)
 * Chun-Li (Street Fighter II: The World Warriors)
 * Alex (Street Fighter III: New Generation)
 * Juri Han (Super Street Fighter IV)
 * Rashid (Street Fighter V)
 * Luke (Street Fighter 6)
 * Morrigan Aensland (Darkstalkers: The Night Warriors)
 * Felicia (Darkstalkers: The Night Warriors)
 * Hsien-Ko (Lei-Lei in Japan) (Night Warriors: Darkstalkers Revenge)
 * Jedah Dohma (Vampire Savior: The Lord of Vampire)
 * Megaman.EXE (Megaman Battle Network)
 * Roll (Megaman)
 * Zero (Megaman X)
 * Tron Bonne (Megaman Legends)
 * Jill Valentine (Resident Evil)
 * Dante (Devil May Cry)
 * Phoenix Wright (Ace Attorney)
 * Viewtiful Joe (Viewtiful Joe)
 * Monster Hunter (Monster Hunter)
 * Tessa (Tabasa in Japan) (Red Earth) (Warzard in Japan)
 * Hayato Kanzaki (Star Gladiator)
 * Saki Omokane (Quiz Nanairo Dreams)

Season Pass 1

 * Ky Kiske (Guilty Gear)
 * Hakumen (BlazBlue)
 * Noel Vermillion (BlazBlue)
 * Willy (Double Dragon)
 * Vergil (Devil May Cry)
 * Frank West (Dead Rising)
 * Edward Falcon (Power Stone)
 * C. Viper (Street Fighter)

Season Pass 2

 * Baiken (Guilty Gear)
 * Spica Celest (Wizard's Symphony)
 * Marco Van De Land (Battle Fantasia)
 * Ingrid (Capcom Fighting Evolution)
 * Jon Talbain (Gallon in Japan) (Darkstalkers) (Vampire in Japan)
 * Ruby Heart (Marvel vs Capcom 2: New Age of Heroes)

Season Pass 3

 * Happy Chaos (Guilty Gear)
 * Kokonoe (BlazBlue)
 * Jubei (BlazBlue)
 * Akuma (Street Fighter)
 * Strider Hiryu (Strider)
 * Captain Commando (Captain Commando)

Final Boss

 * Rathalos (Monster Hunter)

Stages

 * Genbu Temple (Street Fighter)
 * Tian Hong Yuan (Street Fighter)
 * King Street (Street Fighter)
 * Deserted Chateau (Darkstalkers)
 * Cyberspace (Megaman X)
 * Umbrella's Headquarters (Resident Evil)
 * Courtroom (Ace Attorney)
 * Lars Canyon (Guilty Gear)
 * Original Times Square (Guilty Gear)
 * Tír na nÓg (Guilty Gear)
 * Hanging Gardens (BlazBlue)
 * BLUE (BlazBlue)
 * Yokohama (Kunio-kun)
 * City Slums (Double Dragon)
 * Training Stage
 * Heaven's Mount (Monster Hunter) (Final Boss stage, non-selectable)