Spider-Man: The Animated Series Episode Sixty-Three: Secret Wars, Chapter 3: Doom

 Doom

First Aired: November 21st, 1997

Synopsis: Spider-Man and the Lizard rendezvous with the Fantastic Four, who they find injured from a fight with Doctor Doom's robots, and missing the Thing, who was captured by Doom. In Doom's land of New Latveria, he menacingly asks the Thing why they've been brought to Battleworld and by whom. The Fantastic Four go to save the Thing in spite of Spider-Man's insistence that they wait for reinforcements, and upon arriving at New Latveria, discover that they are let in without issue and that within it's a paradise for the native aliens of the planet. At Doctor Doom's castle, a human Ben Grimm greets them and explains that he was transformed back by Doom. Doom himself arrives and explains that he's not a tyrant - he's ruling over the aliens because if he doesn't, another villain will capture them and rule over them. He also reveals that he's fixed up his face so that it's no longer scarred. Reed is doubtful of all of this and attacks Doom, leading to all of the heroes being captured. The Thing tries to convince Doom to let them be free, and Doom points out that the Thing won't even tell him how they got here. The Thing agrees to tell him if the heroes are free, and explains about the Beyonder.

Spider-Man: The Animated Series Episode Sixty-Two: Secret Wars, Chapter 2: The Gauntlet of the Red Skull

 The Gauntlet of the Red Skull

First Aired: November 14th, 1997

Synopsis: On Earth, Morbius and Blade hunt Blade's mother alongside Black Cat, who unexpectedly disintegrates and appears on Battleworld, thanks to a machine operated by Iron Man and the Lizrd. She's confused until Spider-Man reveals that he asked them to do so. The remaining alien natives of the planet are planning an attack on the Red Skull's base and are eager to do so; although Spider-Man wants them to wait until his team are more prepared, he ends up agreeing to attack when they do. Black Cat is annoyed at Spider-Man for summoning her without her permission, and Spider-Man says that he did so because they work well together, to which Black Cat rebuts that he basically wanted her there to make him feel good. The heroes - minus Storm, who is with the alien rebels, and the Fantastic Four, who are attacking Doctor Doom's base - head off to meet up with the rebels, but a sandstorm causes their transport to break down, forcing them to walk. In the Red Skull's base, Smythe reveals a giant robot to Red Skull, and Red Skull in turn reveals that Doctor Octopus is working with them now after Doctor Doom annexed his kingdom. Smythe notes that both villains are planning on stabbing the other in the back.

Spider-Man: The Animated Series Episode Sixty-One: Secret Wars, Chapter 1: Arrival

 Arrival

First Aired: November 7th, 1997

Synopsis: Spider-Man floats through a vortex of floating colours before arriving on a planet, where a pair of eyes floating in the sky express disappointment in him. Madam Web convinces the eyes to give Spider-Man a shot, and the eyes turn into a being calling himself the Beyonder. The Beyonder wants to learn about good and evil, and as an experiment, transports Doctor Octopus, Doctor Doom, Alistair Smythe, the Lizard, and Red Skull to a peaceful planet that has no concept of evil, and then accelerates time by a year, by which point the world has been ravaged. Spider-Man gets transported to the planet and is told to stop the villains, but gets his choice of heroes to assist him. Spider-Man gets the Fantastic Four, Iron Man, Captain America, and Storm transported to the planet. While he's trying to allay their suspicions, the Lizard bursts out of a room he was being held in and attacks Spider-Man, but is defeated by the heroes.

Spider-Man and His Amazing Friends Episode Twenty-Three: The X-Men Adventure

The X-Men Adventure

First Aired: October 29th, 1983

Synopsis: The Spider-Friends are in the X-Mansion with the X-Men, using the Danger Room when a mysterious man takes control of it and turns the training course deadly. The mysterious man reveals himself as Cyberiad and says that one of the people present knows why he's doing what he is, which is to say, taking control of the X-Mansion and trying to kill everyone with the traps within. Professor X reveals a repressed memory of Firestar's - she dated Cyberiad when she lived on the West Coast, back when he was a scientist named Nathan Pryce. When palette-swapped AIM troopers attacked and injured him in an attempt to get his research, he blamed her for some reason. In the present, the heroes split up so that they have a better chance of getting to Cyberiad. Professor X also reveals that due to Cyberiad taking control of Cerebro, the X-Mansion will explode within two hours if they don't take it back.