Appearing in "Future-Shock!"
- Serpent Steed
- Cotton Mather
- Abraham Lincoln (First appearance)
- Freemen (Recap)
- J. Jonah Jameson (Mentioned)
- Green Goblin (Vision)
- Mary Jane Watson (Vision)
- Goblin Glider (Vision)
Synopsis for "Future-Shock!"
Still in the past, Spider-Man laments over the hanging of innocent people during the Salem Witch trials, however, his opponent in this time: Cotton Mather has been reduced to a catatonic state. Finding nothing left to keep him in the past, Spider-Man takes Dr. Doom's Time Machine and attempts to travel back to his own time.
However, a malfunction in the device sends Spider-Man to the year 2019 and right smack in the middle of another conflict between Killraven, and minions of the Martian Masters who have taken over Earth in this era. Initially believing that Spider-Man is another agent of the Martians, he soon changes his opinion when the wall-crawler changes when Spider-Man helps Killraven take down a number of the Martian tripod crafts.
However, when ground forces manage to get the drop on the two fast-allies, they are doused with a hallucinogenic gas which causes them to be haunted by visions. While Killraven is haunted by a vision of Volcana Ash, who chides him over his quest for freedom taking away from his capacity of love, Spider-Man is haunted by visions of the Green Goblin and his guilt for having feelings towards Mary Jane so soon after Gwen Stacy's death. The two manage to fight off their hallucinations and realize that they also manage to fight off their attackers as well.
With their foes defeated, Killraven invites Spider-Man to join his Freemen, an offer which Spider-Man declines explaining that he has too many loose ends in his own time to deal with, and jumps back aboard Dr. Doom's time machine hoping that it will bring him back to his own time.
- This story suggests that Killraven's world is the future of Earth-616. It is in fact, an alternate future of Earth-691.
- Killraven recounts his long-running battle with the Martian Masters, which began in Amazing Adventures (Vol. 2) #18.
- While hallucinating, Killraven recounts how Volcana Ash had gone looking for her sister. That happened in Amazing Adventures (Vol. 2) #31.
- Spider-Man's hallucination is focused on the tragedies in his life. Here are some of his facts:
- He is attacked by a phantom of the Green Goblin. Peter mentions how the original Green Goblin, Norman Osborn, is dead. Norman seemingly died in Amazing Spider-Man #122. However, he survived this battle as revealed in Osborne Journals #1. He will resurface in Amazing Spider-Man #412.
- His son Harry became the Green Goblin in Amazing Spider-Man #136–137. Peter states that Harry was cured of his madness. He learned this in Amazing Spider-Man #151.
- The hallucination mentions various people that were adversely affected by Spider-Man being in their lives. These people are:
- Peter Parker's Uncle Ben was shot by a burglar that he could have stopped as Spider-Man, as seen in Amazing Fantasy #15.
- Peter's parents were secret agents who were killed in action, as revealed in Amazing Spider-Man Annual #5.
- Betty Brant was the first woman that Peter dated from Amazing Spider-Man #7. His adventures as Spider-Man, the danger involved as a photographer for the Daily Bugle, and other factors led her to end her relationship with Peter circa Amazing Spider-Man #18.
- Gwen Stacy died during a battle between Spider-Man and the Green Goblin in Amazing Spider-Man #121.
A flashback in this story affects the chronology of the following characters:
- Inks: backgrounds by Hunt (uncredited).
- Letters (story pages): Saladino (uncredited) page 1, Mantlo pages 2-17.
- This issue contains a letters page, Mail It to Team-Up. Letters are published from Dean Mullaney, Peter Harvey, Richard Nathan, and Mark Dooley.