Street Fighter

Street Fighter is a series of fighting games by Capcom, the first game released in August 1987. Street Fighter and Mega Man characters appeared together in several games, including Cannon Spike, the Marvel vs. Capcom series, the SNK vs. Capcom: Card Fighters series, SNK vs. Capcom: SVC Chaos, Tatsunoko vs. Capcom, Namco × Capcom, Project X Zone, Project X Zone 2, Super Smash Bros. for Nintendo 3DS / Wii U, Capcom Girl no Mind Puzzle, Minna to Capcom All Stars, and Street Fighter × All Capcom. As both series were created in 1987, Street Fighter X Mega Man was released in 2012 to celebrate their 25th anniversary.

References in Mega Man
The series has some references in the Mega Man franchise:
 * In Mega Man 7, an artwork shows a "Street Fighter V'" billboard. Years after the game's release, an actual Street Fighter V (without the dash) is released in 2016.
 * Cut Man will sometimes throw a small Akuma in Mega Man 2: The Power Fighters.
 * Mega Man X series:
 * Hadoken and Shoryuken are techniques that X can obtain from Dr. Light in secret capsules from Mega Man X, Mega Man X2, Mega Man Xtreme and Mega Man Xtreme 2.
 * Dr. Light is dressed like Ryu when he teaches the Hadoken in the first Mega Man X game, and it is said that he already wanted to master the Hadoken and Shoryuken before the first Mega Man game.
 * Besides X, Shoryuken can also be used by Zero and Layer in Mega Man X8.
 * Magma Dragoon is based on Akuma, and is able to use Hadoken and Shoryuken.
 * Shoryuken is also the name from one of The Skiver's attacks.
 * Although uncertain, Burn Rooster appears to be based on Adon.
 * In Mega Man X: Command Mission, Ninetails's most powerful attack is "Annihilator Hadoken".
 * In Mega Man Legends there is a fictional show known as "Steel Prince" in the Japanese version. Outside Japan, "Steel Prince" references are replaced by Street Fighter.

Characters
Below is a list of Street Fighter characters that appeared in Mega Man related video games, except for minor cameos and those that only appeared in the three SNK vs. Capcom: Card Fighters games and Street Fighter ✕ Tekken.

Akuma

 * Akuma in the Street Fighter wiki.

Akuma, known as Gouki in Japan, is a character from Marvel vs. Capcom 2, Marvel vs. Capcom 3, Namco × Capcom and Street Fighter X Mega Man.

One of Cut Man's attacks from Mega Man 2: The Power Fighters has the shape of small Akuma.

Balrog

 * Balrog in the Street Fighter wiki.

Balrog, known as M. Bison in Japan, is a character that appears in Street Fighter X Mega Man. He is the first of M. Bison's minions that Mega Man will fight upon clearing the areas of the eight main bosses. He follows Mega Man from behind, unleashing unlimited barrages of a super attack that will instantaneously eat Mega Man's heart and eat Mega Man's children should he catch up to Mega Man and successfully land a hit. Though Balrog's style is impetuous, his defense is not impregnable against Mega Buster fire. However, a far easier way to defeat Balrog is to just keep running to the right; eventually Balrog will fall into a pit opened by falling tiles that drop after being traversed by Mega Man. After defeating Balrog, Mega Man can quickly slide as far as he can to the right before the stage ends to get a hidden E Tank.

Blanka



 * Blanka in the Street Fighter wiki.

Blanka is one of the eight bosses from Street Fighter X Mega Man.

Cammy

 * Cammy in the Street Fighter wiki.

Cammy appears in Namco × Capcom.

Charlie

 * Charlie in the Street Fighter wiki.

Charlie appears as a playable character in Marvel vs. Capcom 2. He appears as "Shadow" in Marvel vs. Capcom.

In the manga Mega Man Megamix, Charlie appears as a reporter.

Chun-Li



 * Chun-Li in the Street Fighter wiki.

Chun-Li appears as a playable character in Marvel vs. Capcom, Marvel vs. Capcom 2, Marvel vs. Capcom 3, Tatsunoko vs. Capcom, Namco × Capcom and Project × Zone.

She is one of the eight bosses in Street Fighter X Mega Man. She is weak against the Hadoken, and Mega Man can obtain the Lightning Kick upon defeating her. She also appeared in Worlds Unite, and was the first character outside of the Sonic the Hedgehog and Mega Man franchises to take part. After meeting Sticks the Badger, she recruited Guile, Ken, and Ryu to help battle against Sigma-1.

The reporter that appears in the opening scene of Mega Man 9 resembles her.

Crimson Viper



 * Crimson Viper in the Street Fighter wiki.

Crimson Viper, C. Viper for short, appears in Marvel vs. Capcom 3 and Street Fighter X Mega Man.

Dan Hibiki

 * Dan in the Street Fighter wiki.

Dan Hibiki (火引 弾) is a character that is consistently portrayed as an arrogant, overconfident, awesome, yet utterly feeble character in many of the games he is featured in. He is widely considered to be the comic relief of the Street Fighter series because of his over-the-top poses, battle cries, and overall weak moveset. In essence, Dan is considered to be a joke character.

In Street Fighter X Mega Man, Dan appears in the Special Weapon screen as a dummy to test weapons special abilities.

Dhalsim



 * Dhalsim in the Street Fighter wiki.

Dhalsim appears in Marvel vs. Capcom 2: New Age of Heroes and Street Fighter X Mega Man. In Street Fighter X Mega Man, Dhalsim is weak against C. Viper's Optic Laser. Mega Man can obtain the Yoga Inferno by defeating him.

Guile

 * Guile in the Street Fighter wiki.

Guile appears in Worlds Unite, where he, Ryu, Ken and Chun-Li join Team Sticks to battle Sigma. Upon arriving, he specifically managed to take down Double with the Sonic Boom (Sonic not being particularly impressed by it) and Dragon Suplex. Later, Guile and the rest of Team Sticks return to their world to take care of Magma Dragoon in Metro City and go once more to the unified world for the final battle against Sigma.

Juli

 * Juli in the Street Fighter wiki.

Juli appears in Namco × Capcom.

Juni

 * Juni in the Street Fighter wiki.

Juni appears in Namco × Capcom.

Juri

 * Juri in the Street Fighter wiki.

Juri Han appears in Project X Zone.

Karin

 * Karin in the Street Fighter wiki.

Karin Kanzuki appears in Namco × Capcom.

Ken Masters

 * Ken Masters in the Street Fighter wiki.

Ken Masters appears as a playable character in Marvel vs. Capcom 2, Namco × Capcom and Project × Zone. He also appeared in Worlds Unite as one of the Street Fighters who team up with the heroes, acting as the new Team Sticks. He proceeded to use Shoryuken on Dynamo, impressing Knuckles the Echidna enough for him to declare that he has to try that ability. He later aids Team Sticks in preventing the Maverick invasion of his homeworld, where he proceeded to subdue Magma Dragoon by using a sucker-punch variation of Shoryuken, stunning the dragon-based Maverick long enough to be destroyed by Ryu's Haidouken ability shortly afterward.

The Steel Prince from Mega Man Legends was renamed Ken outside Japan, and his weapon was renamed Dragon Punch.

Ken also appeared as a trophy in Super Smash Bros. for Nintendo 3DS / Wii U.

Incidentally, in the 1994 cartoon Street Fighters, Ken was voiced by Scott McNeil. The same actor who voiced Proto Man, Dr. Wily & Eddie in Mega Man.

M. Bison



 * M. Bison in the Street Fighter wiki.

M. Bison, known as Vega in Japan, appears as a boss in Street Fighter X Mega Man and Namco × Capcom. He is also one of the Street Fighter characters who appears in Worlds Unite.

Rolento



 * Rolento in the Street Fighter wiki.

Rolento is one of the eight bosses from Street Fighter X Mega Man. Mega Man can obtain the Mine Sweeper weapon upon defeating Rolento.

Rose



 * Rose in the Street Fighter wiki.

Rose appears in Namco × Capcom and Street Fighter X Mega Man.

Ryu



 * Ryu in the Street Fighter wiki.

Ryu appears as a playable character in Marvel vs. Capcom, Marvel vs. Capcom 2, Marvel vs. Capcom 3, Tatsunoko vs. Capcom, Namco × Capcom and Project × Zone.

He is one of the eight bosses in Street Fighter X Mega Man. If Mega Man has obtained Urien's Aegis Reflector weapon, Ryu's own fireballs can be turned against him. Mega Man can obtain the Hadoken upon defeating Ryu.

Ryu was planned to appear as a playable character in Mega Man Universe, is a downloadable character for Super Smash Bros. for Nintendo 3DS / Wii U (in which Mega Man also appears), and is one of the Street Fighter characters featured in Worlds Unite.

Sagat

 * Sagat in the Street Fighter wiki.

Sagat is a hidden boss character in Street Fighter X Mega Man; a duel with him will precede the duel with M. Bison if Mega Man has won four Perfect victories out of the last battles against the eight bosses. Should the duel with Sagat be successfully activated, M. Bison's stage will be raining upon Mega Man's arrival.

Sakura

 * Sakura in the Street Fighter wiki.

Sakura Kasugano appears in Marvel vs. Capcom 2: New Age of Heroes and Namco × Capcom.

Urien



 * Urien in the Street Fighter wiki.

Urien is one of the eight bosses from Street Fighter X Mega Man.

Vega

 * Vega in the Street Fighter wiki.

Vega, known as Balrog in Japan, appears as a boss in Street Fighter X Mega Man and Cannon Spike. He also appears in SNK vs. Capcom: SVC Chaos.