By now Ryu is easily the character with most guest appearances

So far I've only found a list from two years ago (when he was announced for Smash) in a NeoGAF post
Street Fighter
Ken, Violent Ken, Lee, Eagle, Birdie, Geki, Joe, Gen, Mike, Retsu, Adon, Sagat, Chun-Li, Guile, Dhalsim, Blanka, Zangief, E.Honda, Balrog, Vega, Bison, Cammy, Fei Long, Dee Jay, T. Hawk, Akuma, Shin Akuma, Oni Akuma, Cyber Akuma, Nanase, Kairi, Sakura, Hokuto, Skullomania, Pullum Purna, Darun, Cracker Jack, D. Dark, Area, Vulcano Rosso, Sharon, Shadowgeist, Garuda, Ace, Allen, Blair, Hayate, Blade, Captain Sawada, Arkane, F7, Khyber, Cycloid Beta, Cycloid Gamma, Guy, Rolento, Charlie, Shadow Charlie, Birdie, Rose, Sodom, Dan, Cody, Karin, R.Mika, Juli, Juni, Evil Ryu, Remy, Makoto, Q, Twelve, Alex, Yun, Yang, Ibuki, Dudley, Necro, Sean, Oro, Elena, Hugo, Urien, Gill, C. Viper, El Fuerte, Abel, Rufus, Seth, Gouken, Hakan, Juri, Poison, Decapre, Shadow Lady

Capcom
Mega Man, Bad Boxart Mega Man, Mega Man Volnutt, Roll, Zero, Tron Bonne, Servbot, B.B. Hood, Morrigan, Felicia, Sir Arthur, Tessa, Lei Lei/Hsien-Ko, Donovan, Anita, Devilot, Norimaro, Anakaris, Amingo, Son Son, Ruby Heart, Jill Valentine, Wesker, Nemesis, Chris Redfield, Captain Commando, Strider, Jin Saotome, Dante, Trish, Vergil, Amaterasu, Yami, Nathan Spencer, Haggar, Batsu, Akira, Kyosuke, D.D., Rook, Firebrand, Frank West, Phoenix Wright, Kyosuke, Asura, Maki, Demetri, Ingrid, Leo, Hydron, Hauzer, Kenji, Jedah, Pyron, Soki, Saki, PTX-40A, Viewtiful Joe, MegaMan Juno (Rockman Juno), Vile (BABA), Astaroth, Nebiroth (Nebiros), Huitzil (Phobos), Jedah Dohma, Lilith, Lord Raptor (Zabel Zarock), Q-Bee, The Grandmaster, Solo, Strider Hien, Tonpooh, Druk, Shturm, Shturm Jr

SNK
Akari, Kyo, Benimaru, Terry, King, Yuri, Ryo, Mai, Raiden, Iori, Kim, Yamazaki, Vice, Geese, Rugal, Nakoruru, Hibiki, Haohmaru, Rock, Todo, Chang, Joe, Athena, Orochi Iori, God Rugal, Earthquake, Shiki, Kasumi Todoh, Genjuro, Goenitz, Mars People, Mr. Karate, Leona

Marvel
Apocalypse, Spider-Man, Cable, Marrow, Captain America, Venom, Hulk, Gambit, War Machine, Wolverine, Omega Red, Rogue, Dr. Doom, Cyclops, Shuma-Gorath, Sentinel, Iron Man, Juggernaut, Magneto, Psylocke, Iceman, Storm, Silver Samurai, Thanos, Sabretooth, Blackheart, Spiral, Colossus, Abyss, Deadpool, She-Hulk, Super-Skrull, Dormammu, Thor, X-23, MODOK, Phoenix, Taskmaster, Ghost Rider, Hawkeye, Iron Fist, Dr. Strange, Nova, Rocket Raccoon, Galactus, Onslaught

Tatsunoko
Hakushon Daimao, Eagle Ken, Swan Jun, Condor Joe, Tekkaman, Tekkaman Blade, Casshan, Yatterman #1, Yatterman #2, Doronjo, Hurricane Polimar, Karas, Ippatsuman, Gold Lightan, Silver Lightan

Namco
Jin Kazama, Kazuya, Heihachi, Nina, Yoshimitsu, Paul Phoenix, Marshall Law, Ling Xiaoyu, Raven, Hwoarang, Steve Fox, Lili, Asuka, Marduk, King, Bob, Julia Chang, Kuma, Lars, Alisa, Christie, Jack-6, Bryan Fury, Lei Wulong, Ogre, Pac-Man, Armor King, Devil Kazuya, Mokujin, Prototype Jack, Leon Magnus (Judas), T-elos, Charade, Necron, Omicon, PTX-002C Gespenst Haken "Phantom", Skeith, Stehoney, Vajra, Amazona, Black Bravoman, Waya-Hime, Black Valkyrie, Kamüz, Malix (Zouna), Druaga, Janga, Joker (Joka), Kiso Yoshinaka, Minamoto no Yoritomo, Minamoto no Yoshitsune, Saito Musashibo Benkei, Akatana, Byakuya X, Dokugozu, Dokumezu, Katana, Ninety Nine, Saya, Ain Belenus, Douhet Arambellum, Drei Belenus, Meden Traore

Sony
Cole MacGrath, Toro, Kuro

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Nintendo
Mario, Luigi, Peach, Bowser, Yoshi, Rosalina, Bowser Jr., Lemmy, Roy, Wendy, Iggy, Morton, Larry, Ludvig, Dr. Mario, Donkey Kong, Diddy Kong, Link, Toon Link, Ganondorf, Sheik, Zelda, Samus, Zero Suit Samus, Kirby, King Dedede, Meta Knight, Fox, Falco, Pikachu, Jigglypuff, Mewtwo, Charizard, Greninja, Lucario, Captain Falcon, Ness, Lucas, Marth, Boy Roy, Ike, Robin, Lucina, Pit, Palutena, Dark Pit, Mr. Game and Watch, Wario, Olimar, Alph, ROB, Villager, Little Mac, Wii Fit Trainer, Shulk, Duck Hunt, Mii Gunner, Mii Brawler, Mii Swordsman, Master Hand, Crazy Hand, Master Core

Sega
Sonic, V-Dural, "Aya-me" Ayame Fujieda, Ciseaux & Prelude, Selvaria Bles, Riemsianne La Vaes
Since then, it's missing at least the new characters from Project X Zone 2 and SFV

And these are only videogames, if you were to add comics the list would increase even more

>>376921650

Neat list. Thanks.
However...
>that comic
what went so horribly, horribly wrong?

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>>376921650
You forgot the official family guy flash game where ryu makes an appearance.

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>>376922165
Yeah, I just found out about that thing while checking the Street Fighter Wiki, but I don't even know how to react to that XD Should we also count the characters in Wreck-IT Ralph, since he appears there?

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>>376921820

They forgot to put in that part where the crossovers actually do cool stuff and show that they were important to the final fight.

>>376922562
Only vidya crossovers, but i think you also forgot megaman zero, not zero but zero from megaman zero zero.

>>376921416
>>376921505
>>376921650
That's a shitload of people, is he ever satisfied?

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Ryu is just a lame Son Goku.

>>376923240
Except he doesn't rely soley on his chi, so he's way the fuck better

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>>376922165
>fireball
>not hadouken

This was supposed to by a thinly veiled porn thread you fuckers

>>376922562
Only the characters with whom he actually shares scenes with.

>>376923913
Shut up OP we're talking about the worlds strongest fighter

>>376923425

Dragonball was so fucking good when ki blasts weren't the only way to defeat enemies.

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>>376921353
WHY DOESN'T RYU SMASH THE CHUN

>>376921650
Looks like this list was made before the final Sm4sh DLCs so you can add Corrin under Nintendo as well as Bayonetta under Sega I guess (though I guess she's more a Platinum character).

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>>376925031
ChunLi is out of his league
He's a dirty gross poor hobo
Chun li doesn't even interact with him through out the SF story
Ryu is gay for fighting and doesn't have sex
He's not a horse.
Chun Li likes spending time with the girls

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>>376925385
Rude
Ryu just needs the right person to show him what a romantic relationship is
He's pure

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>>376925815
He has a cute girl that worships him all the time. The only good Ryu ships are Ryu/Sakura and best tier Ryu/Juri

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Chun Li is SNK cum dump!

>>376921650
Does this list count Project x Zone series?

>>376921505
Just adding onto this list, but going from the recent MVC:I game coming out soon, we can add Ultron, Sigma, Captain Marvel, and Megaman X to that list.

>the majority of pro street fighter 5 players openly rank ryu in the bottom three characters in the cast

OH BOY NEW CR HP ANIMATION GUYS

>>376923240
>Ryu is just a lame Son Goku.
Ryu is just a cool Son Goku. Fix'd.

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>>376921353
He has done stuff like drop kick Super Mario and punch Galactus in the dick and how does Capcom repay him.....SFV.

Fucker shouldn't even have bothered being born.

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>>376923691
>dragon punch
>not shoryuken

>hurricane kick
>not tatsumaki

>>376929701
90s nostalgia. Family guy is full of that. They know the real moves names just using the ones used in the old SNES SF2 manual.

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>>376929701
>not flying hurricane magic punch

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>>376925385
>poor hobo

What about his prize monies?

>>376932043
HE SPENT IT ON MEAT

>>376925031
Because he spent all his training time on fighting so he doesn't have the required skill level to pound Chun's master experienced vag.

>>376925031
Isn't it obvious? Ryu wants to fuck Ken.

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>>376932170
CLEVER MAN

>>376932043
Clearly not spending it on clean clothes. The dirty hobo.

>>376932043
He doesn't have a job. He uses that money to finance all the traveling and living expenses he has from going all over the world beating people up. Also probably medical expenses from getting beat up himself.

>>376932393
Street Fighter II V anime please go and stay go

>>376921650
>>376921505
>>376921416
you forgot all the stray dogs and cats he ate since he is a filthy hobo

>>376932043
Actually in most of his endings he doesn't even atend the prize ceremony (he doesn't receive the trophy or the money), after the final fight ends he just go away in search for more fights.

>>376930080
OHNODODIDOSEEZ
that is the noise he makes when he does da pounch

>>376923691
>>376929701
>>376929981
>didn't play SF1

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>MSN Messenger

I miss that thing