Marvel vs. Capcom 4: Infinite

Marvel vs. Capcom 4: Infinite is an updated fighting game patch for Marvel vs. Capcom: Infinite by Capcom, released on September 19, 2021 for PlayStation 4, PlayStation 5, Xbox One, Xbox Series X and Microsoft Windows. It act as a retitled post-season 1 update of the original game.

Modes
All modes remain the same, in addition to Story Mode now includes Character Episodes, while main episode of the previous version is called "Ultron Sigma Saga".

Gameplay/Features
While retaining two-on-two tag team battle from its previous update, Marvel vs. Capcom: Infinite, Marvel vs. Capcom 4: Infinite gets further new features:
 * Enviromental Stage Options: Press L1 or R1 to choose different environment on specific stages.
 * Ratio System. Players can now choose between Single or Tag while in character select. Not available in Practice-related Modes.
 * Stone Slot Select: Max 4 slots of Stones by default. Direct Analog Right Stick to choose between four stones. If choosing No Stones in the first slot(s), it immediately skipped the later slots and start the match.

Episode 1: Ultron Sigma Saga
The main protagonists of the story are Captain Marvel, X, Thanos, Dante, Captain America, Ryu, Wolverine, Strider Hiryu and Chris Redfield, including Akuma. The main villains of the story are Ultron, Death, Jedah Dohma and Sigma. While the Infinity Stones are prominent throughout the story, the Reality and Soul Stones receive the most importance within the story.<!--

One day in the Marvel Universe, without warning, a convergence occurs, merging various locations with the worlds of Capcom. At the center of the convergence, stands Ultron Sigma, a merged form of Ultron, the Avengers' robotic nemesis, and Sigma, arch-enemy of X. This new villain used the Space and Reality]] [[Infinity Stones to cause the convergence, and is unleashing an evolved form of the Sigma Virus on the merged world to infect the population and turn them into cyborgs under "their" control. 88 days after the convergence, Captain America leads a group of heroes in an assault on Ultron Sigma's base in Xgard (the merged form of The Mighty Thor's Asgard and Abel City from the Mega Man X series). While most of them manage to distract Ultron Sigma's forces of drones and infected Asgardians, a small group led by B.S.A.A. captain Chris Redfield and Doctor Stephen Strange infiltrates the base's underground prison to find the Mad Titan, Thanos, who Ultron Sigma somehow took hostage. Even though some of them are cautious about getting his help, the heroes get Thanos out of the prison and manage to escape from Ultron Sigma's grasp, at the cost of Thor Odinson slowly being infected.

Returning to their base in Avengers Tower in New Metro City (the merged form of Marvel's iteration of New York City and Metro City from the Street Fighter and Final Fight series), the heroes put Thanos behind a force field for safety precautions. Even though Iron Man and Chun-Li object to it, Doctor Strange uses his magic to release Thanos from his chains. At that moment, Thor's infection fully takes him over, and speaking through him, Ultron Sigma taunts the heroes, proclaiming that they will eventually be infected too. As the infected Thor leaves for Xgard, Gamora and Nova arrive on a Quinjet, and explain that they learned that Ultron Sigma managed to evolve the virus with help from Grandmaster Meio, and is building a biological weapon with the power to infect the world via Sigma virus. The heroes manage to convince Thanos to reveal the locations of the remaining four Infinity Stones, so they can use them to face Ulton Sigma. They then split of into groups to go search for them, while Iron Man, Hawkeye and Spencer stay behind to guard the base.

Captain America and Chun-Li head for Valkanda (the merged form of Wakanda from the Black Panther comic book and Val Habar from the Monster Hunter series) to get the Time Stone, which is currently being used to hide the nation in a barrier beyond time. On the surface, the king Black Panther and a female Monster Hunter find Ryu, who explains that he got lost while helping a group of researchers study anomalies caused by the convergence. At that moment, Hulk shows up, angry that he got lost too. After Ryu calms him down with a fight, Captain America and Chun-Li arrive asking for the Time Stone. Black Panther is cautious about giving it up, as he fears that his people will get infected if the barrier is broken, but Captain America warned him that even with the Time Stone, Valkanda won't last much longer from Ultron Sigma's powerful invasion, as if Panther keeping his people like a prisoner. At that moment, Ultron Sigma have been sending the drones to trail the Captain America and Chun-Li, and breach the barrier, as well as using the virus to infect a Dah'ren Mohran, which then starts wrecking the royal gates to the city. Ryu and Hulk manage to protect the gates and destroy the Dah'ren Mohran. While Monster Hunter and Batsu Ichimonji fighting off the remaining. Ultron Drones, Panther is confronted by a mysterious hooded fighter with a similar fighting style as Ryu alone and recognize who he is. Panther is surprise that his opponent was only using him to create a new Time Stone during a fight and left to find and re-create new stones from his encounter, while the original remains with Panther. Just as Captain America predicted as the virus spread across Valkanda, Black Panther got a word from his wife, Storm that half of the stone’s power can be replicate, though not in full power as the original. Panther decide to disable the barrier and gives the Time Stone to Captain America on behalf of Chun-Li's wisdom to keep the promises to defeat Ultron Sigma to justice quickly. He, Storm and Batsu shows their allies that they are also sheltering the survivors of Ultron Sigma’s siege, mutants, Inhumans, and many other heroes alike. Ryu notice that Wolverine was at Valkanda, and Storm informs a bad news of him being missing in the day after he and Panther preserve the Time Stone. Ryu and Hulk then joining Captain America and Chun-Li to leave for Avengers Tower and hopes to find and rescue Wolverine, while Black Panther, Storm and Monster Hunter stay behind to protect their nation and sheltering the surviving heroes, with a help from Batsu, Akira Kazama, Kamala Khan and Anakaris.

Chris Redfield infiltrates the base of A.I.M.BRELLA (an alliance between the Advanced Idea Mechanics from the Avengers/Captain America comic book series and the Umbrella Corporation from the Resident Evil series) to search for the Mind Stone. Even though Chris wants to find it alone, Iron Man calls up Spider-Man to meet up with him in A.I.M.BRELLA's underground laboratory for assistance. As they search, they are attacked by a group of B.O.W.s unleashed by A.I.M.BRELLA as security. After dealing with them, they find Frank West spying on them, wanting to get a scoop after hearing reports of A.I.M.BRELLA abducting people and turning them into B.O.W.s. Letting Frank accompany them, they learn that A.I.M.BRELLA is bonding their B.O.W.s with alien symbiotes, hoping it increases their strength. They then see Mayor Mike Haggar in one of the stasis tubes, who then bursts out and attacks Chris and Frank, mistaking them for his captors. After Spider-Man explains the situation to Haggar, they hear voices from the next room. The four overhear the leader of A.I.M.BRELLA, M.O.D.O.K., discussing an agreement with Jedah Dohma to use the symbiotes to create an army of unstoppable monsters. As Jedah leaves to the gateway device to another dimension, the heroes confront M.O.D.O.K., who responds by sending the B.O.W.s after them. As they fight, M.O.D.O.K. uses the Mind Stone lodged in the gem on his forehead to assist the B.O.W.s, but luckily, the heroes still manage to defeat them. As a last resort, M.O.D.O.K. calls in Nemesis to attack them. After the heroes deal with him, Spider-Man web-grabs the Mind Stone from M.O.D.O.K., and recently escape just as a giant symbiote monster emerges when Frank unable to shut down the gateway device, as its functionality is powered from another dimension as well.

Around the same time where Chris' team infiltrates A.I.M.BRELLA on Earth, at another dimension known as the Dark Kingdom (a merged form of the Dark Dimension from Doctor Strange and the Makai Kingdom from the Darkstalkers series), Ghost Rider drives though on his Hellcycle, seeking vengeance on Jedah for abducting millions of souls from the merged world. As he searches for him, he bumps into Morrigan, who tries to sway him. Unamused, Ghost Rider gets into a fight with Morrigan, which ends with the arrival of Doctor Strange, Dante and Arthur, who are looking for the Soul Stone. Morrigan tells them that Jedah has it, and leads them to him. The heroes find that he is making a weapon using a symbiote and all the souls he took, and intends to take a million more so he can fuel it up and use it against Ultron Sigma. As Dante fires at Jedah, Doctor Strange tries to use a spell to deal with the symbiote, but before he can, Dormammu and Firebrand appear to challenge him and Arthur. As they fight, Doctor Strange criticizes his enemy for giving control of the Dark Kingdom to Jedah since the convergence weakened him, but Dormammu responds by saying that he is still strong enough to face him. After dealing with the two demons, Doctor Strange tries to disable the symbiote weapon with a spell, but is unsuccessful, as Jedah manages to get away with the Soul Stone, revealing the gateway which captive the symbiote is connected to A.I.M.Brella headquarter's gateway device, as Jedah and his now born-giant symbiote chases Chris' team. With no other option, the heroes leave the Dark Kingdom with a portal to chase after him.

Back at Avengers Tower, Iron Man chats with Doctor Thomas Light, who figures that the only way to harness the power of the Infinity Stones is to create a device that can keep them stabilized. At that moment, Ultron Sigma and his drones attack the tower, with the intent on killing Thanos. Dr. Light prepares a shield to protect the tower while Iron Man and Spencer deal with the drones. As the shield activates, the drones start to penetrate it. From behind the force field, Thanos mocks Iron Man and Dr. Light for being indirectly involved in the creation of both Ultron and Sigma, despite fighting for peace. As the drones break through the shield, Ultron Sigma arrives ready to kill. With no other options, Iron Man and Spencer use the power of the tower to electrocute and weaken Ultron Sigma, then release Thanos from the force field to deal with him. As he deals brutal attacks on Ultron Sigma, Thanos punches the Reality Stone, causing it to crack, which deals massive damage to the metal tyrant. With no options left, Ultron Sigma uses the Space Stone to teleport away and repair.

Meanwhile, Captain Marvel, Rocket Raccoon, Gamora, Nova, X and Strider Hiryu prepare to assault Grandmaster Meio's base on Knowmoon (the merged form of Knowhere from the Guardians of the Galaxy comic series and the Third Moon from the Strider series) with the intent on destorying the bio-weapon and finding the Power Stone. Arriving at the base, Gamora and Strider take out the security drones while the others head for the core. On the way there, they bump into Zero, who has been forcibly reprogrammed to serve as Meio's main security robot. Rocket and X manage to subdue and fix Zero while Captain Marvel and Nova continue heading for the core. As they arrive at the core, Meio appears and sends the drones to attack them. When questioned during the fight, Meio reveals that he's helping Ultron Sigma because he wants to see the merged world suffer. As Captain Marvel and Nova take out the drones, Gamora and Strider strike the finishing blow on Meio. As Rocket takes the Power Stone from Gravitron Core, the base's computers activate the core, leading the heroes realize that the Sigma Virus gas is actually inside Gravitron Core, and the core itself act as a bomb, just as it launches on a collision course to New Metro City.

As the Gravitron Core heads for the surface, Doctor Strange's group returns to Avengers Tower to report Jedah's escape, while Chris' group contacts them about the giant symbiote monster, which is now hot on their trail. Chasing them outside of A.I.M.Brella's base to downtown New Metro City, the monster starts recking havoc on the city. As Ghost Rider, Dante and Morrigan head off to assist Chris' group, Captain Marvel's group contact Iron Man about the Gravitron Core. At that moment, Captain America contacts the tower to tell them that his group got the Time Stone. Iron Man tells him to come as quickly as possible. Back on the streets, Spider-Man suggests that they use high vibrations to weaken the monster. Chris tries firing his grenade launcher at the monster, but the blast sends pieces of the symbiote all over the place, with one piece bonding with Spider-Man. As Chris continues to deal with the monster, Frank and Haggar use the sound of taxi horns to weaken the beast and force the symbiotic off of Spider-Man. As Spider-Man heads to Avengers Tower to give the Mind Stone to Iron Man, he is ambushed by Jedah, who demands to have the stone. Ghost Rider and Morrigan arrive to deal with Jedah, followed by Dante. When Spider-Man asks for additional aid, Captain America's group blasts by on the Quintet, and Hulk jumps out to help. Seeing he's outmatched, Jedah retreats to Avengers Tower to face Iron Man, just as Doctor Strange, Spencer and Arthur arrive in a portal to help deal with the monster. Back at Avengers Tower, Captain America, Ryu and Chun-Li arrive with the Time Stone just as Captain Marvel contacts the group, reporting the Gravitron Core has entered the Earth's atmosphere. Captain America tells Captain Marvel's group to head back to the tower to assist in dealing with the monster, as Iron Man leaves to assist them. As the heroes attack the monster with everything they got, Jedah arrives at the tower to take the Time Stone. Captain America and Ryu fend him off with the Time Stone, but Ryu starts subsuming to the Satsui no Hado, which intrigues Thanos. After Thanos steps in to defeat Jedah, the demon retreats just as the monster nears the tower and the Gravitron Core inches closer to the ground. Doctor Strange uses a spell to redirect the Gravitron Core towards Avengers Tower, and Iron Man, X and Zero use the Time, Mind and Power Stones respectively to blast the Gravitron Core and destroy the monster. Even though most of the planet is safe, the virus manages to slowly infect the heroes and Thanos, as well as ten blocks of the city. At that moment, the Time Stone knocks Iron Man unconscious, and shows him the story of how Ultron Sigma came into being.

Three days before the convergence, Jedah visited the Marvel Universe with a proposition for Mistress Death, in return for equilibrium, Jedah promised to take the souls of every being in the worlds of Capcom for Death to have by merging them with the Marvel Universe. The two gathered as many villains from the worlds including Thanos, with the intent on finding the Infinity Stones. Giving Thanos the Space Stone and sending the Reality Stone to X's world for safe-keeping, the villains planned to use the stones and a special power-scything engine to merge the worlds and take as many souls as possible. The day before the convergence, Ultron and Sigma, who were part of the villains' alliance, had a private discussion about the plan, and figured they could the stones themselves to accomplish their shared goal of exterminating all organic life and remaking the world in their image, feeling that it doesn't need souls. On the day of the convergence, Ultron and Sigma double-crossed the alliance, with Ultron destroying Sigma's body and absorbing his A.I. into his body, creating Ultron Sigma. Even though he tried fighting back with the Space Stone, Thanos couldn't defeat Ultron Sigma and the power of the Reality Stone. Taking the Space Stone as his prize, Ultron Sigma combined Ultron's body with the two stones and the engine, and began the convergence. As Iron Man wakes up back in the present, the heroes and Thanos discuss on what to do, and figure the best option to cure everyone of the virus is to destroy Ultron Sigma. Captain America tells everyone that they need to get the Soul Stone from Jedah and complete the device. Dante volunteers to face Jedah, while everyone else heads for Xgard, with Iron Man, Gamora, Zero, Ryu, Frank and Thanos head for Sigma's old lab to finish the device.

Many of the heroes go back to Xgard, fighting off all the Ultron Drones and Xgardians they can before they reach Ultron Sigma. While in the lab finishing the device (later dubbed the Infinity Buster by Iron Man), Iron Man reveals to Thanos what the Time Stone revealed to him. Learning that Death betrayed Thanos and was simply using him to fulfill her goals with Jedah, Thanos attacks the heroes in a fit of rage. He successfully manages to beat them single-handedly, however he keeps his end of the bargain, finishes the device and gives Gamora the Time Stone, revealing that all he wants now is the Satsui no Hado which was sealed inside Ryu's body, thus freeing Ryu from the dark Hadou with energy absorbing gauntlet and use it for revenge against both Jedah and Death before teleporting away. Doctor Strange then arrives to take Iron Man and the device to Xgard.

Dante goes to the Dark Kingdom to fight Jedah, who is there waiting for him. Dante strikes, but Jedah dodges and injures Dante to the point where he goes into a permanent Devil Trigger to fight Jedah. Dante ultimately comes out victorious and leaves with the Soul Stone, sparing Jedah and effectively leaving him with his plans in ruin.

The heroes make it to Ultron Sigma, who sends an infected Thor to fight them. After Thor is beaten, Ultron Sigma steps in and fights them himself. After the fight, Dante shows up, and pretends to give up the Soul Stone to Ultron Sigma, knowing very well that he won't be able to control it's power, since he lacks a soul, the same warning mentioned by Thanos to Ultron prior the convergence. As the Soul Stone's power harms him, Ultron Sigma calls upon the full power of his two Infinity Stones to take on a bigger form, Ultron Omega. As Spider-Man web-grabs the Soul Stone from Ultron Omega's hand, it is flung at the infected Thor, who uses it to cure himself of the infection. With Thor free, the heroes strike a final assault on Ultron Omega, and after Captain Marvel and Dante weaken the metal giant, X uses the Infinity Buster, and the combined willpower of Strange, Morrigan, and the rest of the heroes, to destroy Ultron Omega, putting an end to his reign and eliminating any trace of the virus.

While Ultron Sigma is destroyed, Haggar and Frank West realize that the universes aren't separating. Strange says that the only way for them to be separated is with the power of the six Infinity Stones and the Reality Stone is cracked due to the fight between Ultron Sigma and Thanos, thus rendering the stone useless and must be repaired in a time being. Thor places them in protection in three locations in number of two stones per area with the Dark Kingdom, Xgard & Earth. The heroes then leave with Captain America, Ryu, Chris and Spider-Man having a talk on restructuring the now unified worlds of Marvel and Capcom.

In an after-credits scene, Jedah and Death are seen having a talk on Death's Fountain with Jedah revealing that there is yet another way to meet their original goal. However, Thanos arrives and attempts to destroy both Jedah and Death with the power of the Satsui no Hado he stole from Ryu as revenge for Death's betrayal. The outcome remains unknown. -->

New Characters
Characters marked with † are non-playable characters featured in story mode or the backgrounds of stages, but are not fought.

Characters marked with + are non-playable characters fought in both arcade and story modes.

Characters marked with ‡ are non-playable characters fought in story mode.

Characters marked with - are non-playable characters who appear as part of a playable character's special moves.

Bold denotes new characters.

Italics denote DLC characters.

Playable

 * Wolverine
 * Sentinel

Non-Playable

 * Storm†
 * Doctor Doom†
 * Luke Cage†

Playable

 * Akuma
 * Albert Wesker
 * Jill Valentine
 * Batsu Ichimonji

Non-Playable

 * Anakaris†
 * Alex
 * Kyosuke Kagami†
 * Akira Kazama†

Bosses

 * Akuma Thanos+ (S4)

New Stages
Some of these stages are brand new and originally story exclusives. Alternate versions of original stages can be selected via Environmental setting button (R1/RB) for specific stages (stages w/ former Story exclusive variants denotes for “*”. Stages which were once not for stage battle in Story Mode denotes for “**”.

Stages with environmental options
 * Avengers Tower - Briefing Room: Daylight & Nighttime
 * Dark Kingdom - Heart of Chaos: Active & Inactive*
 * New Metro City - Downtown: Daylight, Nighttime
 * New Metro City - Crossroads: Daylight, Nighttime
 * Valkanda - Plains: Daylight, Autumn, Nighttime
 * Xgard - Bifrost Bridge: Nighttime, Daytime***, Stormy Night
 * Xgard - Throne Room: Clean, Burning

Former Story Stage exclusives
 * A.I.M.BRELLA - Research Facility
 * Avengers Tower - Under Siege
 * New Metro City - Symbiote Attack
 * Valkanda - Sand Dunes
 * Xgard - Final Battle (Story and Arcade Mode final boss stage)
 * Unknown - Death's Sanctuary
 * Unknown - Desolate Realm

Stone Select
Players can now select max two stones before the match

Capcom

 * Kyle Hebert - Ryu
 * Ted Sroka - X
 * Ashly Burch - Chun-Li
 * David Kaye - Jedah Dohma
 * Reuben Langdon - Dante
 * Siobhan Flynn - Morrigan Aensland
 * TJ Storm - Strider Hiryu
 * Roger Craig Smith - Chris Redfield
 * Johnny Yong Bosch - Zero
 * Matt Riedy - Mike Haggar
 * Dameon Clark - Nathan "Rad" Spencer
 * Dan Woren - Arthur
 * T.J. Rotolo - Frank West
 * Chris Tergliafera - Sigma, Ultron Sigma/Ultron Omega
 * Melissa Hutchison - Monster Hunter
 * Michael Mislove - Dr. Light
 * Adam Harrington - Grandmaster Meio
 * Damon Dayoub - Nemesis
 * Ian James Corlett - Firebrand
 * D.C. Douglas - Albert Wesker
 * Kari Wahlgren - Jill Valentine
 * Sean Schemell - Batsu Ichimonji
 * Richard Epcar - Akuma
 * Mark Whitten - Alex
 * Brad Swalie - Kyosuke Kagami
 * Stephanie Sheh - Akira Kazama

Marvel

 * Brian Bloom - Captain America
 * Grey Griffin - Captain Marvel
 * Jim Meskimen - Ultron, Ultron Sigma/Ultron Omega
 * Isaac C. Singleton Jr. - Thanos
 * Travis Willingham - Thor Odinson
 * Eric Loomis - Iron Man
 * Robbie Daymond - Spider-Man
 * Fred Tatasciore - Hulk, Ghost Rider, Thaddeus Ross
 * Vanessa Marshall - Gamora Zen Whoberi Ben Titan
 * Trevor Devall - Rocket Raccoon
 * Liam O'Brien - Doctor Strange
 * Ben Diskin - Nova
 * Chris Cox - Hawkeye
 * Phil LaMarr - Dormammu
 * James Mathis III - Black Panther
 * Wally Wingert - M.O.D.O.K.
 * Alicyn Packard - Death
 * Kevin Michael Richardson - Groot
 * Scott Porter - Winter Soldier
 * Laura Bailey - Black Widow
 * Andrew Morgado - Venom
 * Steve Blum - Wolverine
 * Jim Ward - Sentinel
 * Mara Junot - Storm
 * Lex Lang - Doctor Doom
 * Khary Payton - Luke Cage

Misc.

 * Jon Bailey - Xgardian A, Symbiote Soldier A
 * Jon Lipow - Xgardian B, Symbiote Soldier B

Universal

 * Dave B. Mitchell - Narrator

Trivia

 * It took longer years for Marvel vs. Capcom : Infinite to receive further update since its previous backlash regarding of the X-Men (and Fantastic Four) cast’s physical exclusions caused by the involvement of movie rights issues into this legacy game series, as Fox only owned the movie rights to develop X-Men and Fantastic Four movies prior to being merged with Disney in 2019, not the rest of the rights.