Spider-Man and His Amazing Friends - Season 1 - Eps 8: The Prison Plot
Magneto holds a prison island hostage and will throw off the Earth's gravitational hold until the prison agrees with Magneto to release the Brotherhood of Evil Mutants even though the Spider-Friends are also his hostage.
About Spider-Man and His Amazing Friends

Title: Spider-Man and His Amazing Friends
First Air Date: 1981-09-12
Last Air Date: 1983-11-05
Status: Ended
Rating: 7.4/10 (from 238 votes)
Language: EN
Seasons: 3
Total Episodes: 24
Network: NBC
Genres: Action & Adventure, Animation, Family, Sci-Fi & Fantasy
Production Companies: Marvel Productions
Synopsis
Spider-Man and His Amazing Friends is an American animated television series produced by Marvel Productions starring established Marvel Comics characters Spider-Man and Iceman and an original character, Firestar. As a trio called the Spider-Friends, they fought against various villains.
Cast

Dan Gilvezan
Spider-Man / Peter Parker (voice)

Kathy Garver
Firestar / Angelica Jones (voice)

Frank Welker
Iceman / Bobby Drake (voice)