The Marvel Animated Universe
X-Men: The Animated Series featured several crossover with other Marvel characters during its run.
1. Rouge and Carol Danvers / Ms. Marvel (Warbird) in the season 2 episode 22, “A Rogue’s Tale”
2. Dr. Strange makes a cameo appearance in several episodes of X-men (The starjammers, The Inner Circle” and “Nightcrawler”)
3. Ghost Rider makes a cameo appearance in season one episode 15, “The Finale Decision”.
4. Spider-Man makes two brief quick shot cameos in season 3 episode 33, “Child of the light” and episode 41”the Inner Circle”. One has Spidey hanging upside down a building in the shadows and the other just shows him shooting a webbing .
5. Captain America & Wolverine team-up in “Old Soliders” in episode 73 (11 of 14), of Season five.
Iron Man had a cast full of heroes as he was apart of a team called “Force Works” with the rosters of notable heroes
1. War Machine
2. Julia Carpenter/Spider-Woman
3. Hawkeye
4. Scarlet Witch
5. Century
6. H.O.M.E.R. ( basically A.I. Jarvis)
7. S.H.I.E.L.D. was present with Nick Fury and Dum Dum Dugan, the only guest that appears is Bruce Banner aka: The Hulk in the episode 24, “Hulk Buster” of Season 2.
Fantastic Four featured several of Earth’s Mightiest Heroes roster guest starring
1. Namor: The Sub-Mariner has a cameo in the first episode “The Origins of The Fantastic Four” and full appearance in episode 4 of season one “Now Comes the Sub-Mariner”.
2. Silver Surfer debuts in episode 5 of Season One “The Silver Surfer and The Coming of Galactus part 1 & 2” we also get to see Utah: The Watcher, surfer returns two more appearance once in the Season one finale episode 11, “The Silver Surfer and the return of Galactus and the series finale of season two episode 26 “Doomsday”
3. Daredevil shows up in the season 2 Premiere “And the blind Shall lead them”
4. The Inhumans make their debut in multiple episode for the InHuman saga (“And the cries of Medusa”, “The Inhumans Among Us”, “Beware the hidden Land”, “When Calls Galactus”, “Hopelessly Impossible”,
& “The Sentry Sinister”)
5. Thor Odinson makes a Thunderous debut in episode 19 of Season 2, “To Battle the Living Planet “.
6. The King of Wakanda: T’Challa makes his royal appearance in episode 20 of Season 2, “Prey of the Black Panther “
7. Episode 22 of Season 2 sees Bruce Banner and Rick Jones pay a visit to Four Freedom Plaza to see the Family in “Nightmare in Green” there’s also a few quick cameos of The X-men, and Spider-Man briefly.
The Incredible Hulk featured the Golly Green Giant in his prime form on the run being hunter by the government and his Arch-Nemesis: The Leader with is gamma goons. Fortunately Hulk picked up a few allies along the way.
1. Rick Jones, Betty Ross and General Thaddeus Thunderbolt Ross make the series Premiere 2-parter miniseries “The Return of the Beast”
2. Doc Samson makes his first appearance in the episode three “Raw Power” in Season One. So does Gabriel Jones from Captain America’s Hollowing Commandos, except he’s a Shield agent.
3. In episode 4,”Helping Hand, Iron Fist”, Bruce Banner heads to L.A. to meet his old friend Tony Stark, in an attempt to find a cure for his Gamma infused affliction. He’s also trying to fly under the radar because Ross’s Hulkbusters are in high pursuit, when all seems hopeless aid comes from Iron Man & War-Machine.
4. Johnny Blaze is riding through the city of Chicago wherein he stumbles upon a man on the run from the authorities who was seen at the sight of a terrible Arsenal hit. Turns out he’s chasing Bruce Banner in who’s been wrongly accused in the episode “Innocent Blood”.
5. Episode 7 entitled “Doomed” sees Bruce reunite with his cousin Jennifer Walters, unfortunately their reunion is interrupted by Dr. Doom who cause a fatal accident that puts Jen in critical condition and requires a blood transfusion to save her life, Bruce is forced to give his Gamma blood to Jen which has a sensational impact on her as she is transformed from a mild girl to the Bootylicious She-Hulk.
6. Episode 8 “Fantastic Fortitude” sees Jen & Bruce in New York City to see the Fantastic 4, only their on vacation and The Thing is the only one at home.
7. Episode 9 “Mortal Bounds”, A unknown virus is spreading to fast to cure and so Bruce Banner is asked to help find a solution he gets assistance from a unique Dr. Donald Blake who appears to be handicapped physically but with support from his wooden cane lies a secret for whenever there’s a major threat lurking, he slams it down on the ground to reveal its true identity as “Mjolnir” the enchanted Uru hammer of THOR !!!
8. Bruce Banner and The Hulk spilts into two separate beings, unfortunately it seems one can’t survive with out the other half. In the three-parter episodes: “Darkness and Light”. In the midst of a this Rick Jones is accidentally knocked into a gamma bath tank and is transformed into a Teen Hulk (Not A-Bomb)
9. Episode 14, “Hulk of A different color”. There’s no just one Hulk, up and about….no now there’s three Rick Jones, Jennifer Walters and Bruce Banner except he’s seems a bit different a shade grey than his normal Green self and also he’s retained more intelligence in this new persona. The Greyhound Hulk makes his debut.
10. The King of Cameos himself: Stan Lee makes his grand appearance as Jennifer Walters’ father “Cliff Walters” in episode 15 of Season 2: “Down Memory Lane”.
11. Doctor Steven Strange and She-Hulk travel to the Brian of Bruce Banner when he’s possessed by an evil supernatural villain in episode 16, “Mind over Anti-Matter”.
12, the title speaks for itself “They call me Mr. Fixit” episode 17. Nuff said.
SPIDER-MAN: The Animated Series, sees our beloved Web-Slinging Wonder team up with various characters that were previously introduced leading up to a grand series finale that was the true birth of the Spider-Verse and original Marvel Cinematic Universe in animation.
1. Night of the Lizard the series Premiere episode Spidey makes a joke referencing The Hulk, Fantastic Four and the Defenders
2. Day of the Chameleon feature S.H.I.E.L.D., Nick Fury, and Agent X who was intended to be Jessica Drew (Pre-becoming Spider-Woman) according to producer John Semper Jr.
3. Seasons 2 saw Spider-Man team-Up with The X-Men in the episodes “The Mutant Agenda” & “The Mutants’ Revenge”.
4. Enter the Punisher….
5. Frank Castle returns in “Duel of the Hunters” to collect on a bounty For Spider-Man who’s been altered into a monstrous creature known as “Man-Spider”!
6. Blade comes to NYC to hunt a creature of the night who’s preying on innocent
people at first he sets his glance upon our web-head unfortunately the real night stalker is Michael Morbius in a two-parter miniseries “Blade: The Vampire Hunter” & “The Immortal Vampire”
7. Dr. Strange & Wong enlisted the help of Spider-Man against Baron Mordo and Dormammu in the episode “Dr. Strange”.
8. Madame Web. makes her debut in the series and being to test Peter Parker for an unknown threat coming. Episode “Make A Wish”.
9. Matthew Murdock is anonymously hired to represent Peter Parker who has been accused for a federal crime that amounts to treason against the United States in the two-parter episodes “Framed” & “Man Without Fear”.
10. Venom makes an unexpected return to once again plagued Spider-Man, except he’s not alone a new Symbiote has come and he’s spreading “Carnage” in his wake. Fortunately Spidey got some serious armored geared back-up with Iron Man & War-Machine in “Venom Returns” & “Carnage”.
11. The Temptress feline vixen cat-burglar Black Cat makes herself known in the two-parter episodes “The Cat” & “The Black cat”.
12. Punisher Returns once again armed and dangerous, his target isn’t Spider-Man this time but Peter Parker in” The Return Of The Green Goblin”.
13. “The Hunting Of Mary Jane” had a brief broadcast of a unknown Motorcyclist in a shot. Apparently it was supposed to be Johnny Blaze according to Stemper.
14. Seasons Five of the series ultimately ended up being the last season of the show. As a result it was broken down into three arc’s “The Six Forgotten Warriors” a unique arc featuring the retailing of Captain America’s Origin’s and that Peter Parker’ parents were actually spies for the U.S. government. It also featured obscure WW2 heroes that were created to try and replicate the original super solider serum. The next arc was “Secret Wars” with Spider-Man leading a team in a battle for the ages to answer the age old question “Can Good Triumph over Evil?!” And finally cumulating in a personal introspective look at Peter Benjamin Parker across the multiverse in “Spider Wars”. It took time but ultimately what was accomplished was simply extraordinary. Using the established foundational world building from all the previous series into a cohesive tapestry.