Super Friends - Season 9 - Eps 7: The Death of Superman
The unthinkable has happened: Superman is dead, the victim of Kryptonite poisoning. Injured in the mishap which felled Superman, a weakened Firestorm is captured by Darkseid, who wants the Galactic Guardian to reveal the details of the Man of Steel's demise. Meanwhile, several members of the Super Powers Team gather at the Fortress of Solitude, where they come across evidence indicating that Superman is still alive—but if this is true, why has he allowed the other Team members to fall into Darkseid's clutches?
About Super Friends

Title: Super Friends
First Air Date: 1973-09-08
Last Air Date: 1985-10-26
Status: Ended
Rating: 7.6/10 (from 120 votes)
Language: EN
Seasons: 10
Total Episodes: 109
Network: ABC
Genres: Animation, Sci-Fi & Fantasy
Production Companies: Eric Porter Studios, Hanna-Barbera Productions
Synopsis
The most powerful heroes ever--Superman, Wonder Woman, Aquaman, Batman and Robin--join forces with teenagers Wendy and Marvin and their dog, Marvel the Wonderdog, to defend justice and guard the innocent.
Cast

Danny Dark
Superman (voice)

Adam West
Batman (voice)

Casey Kasem
Robin (voice)

Mark L. Taylor
Firestorm (voice)

Frank Welker
Darkseid (voice)

William Callaway
Aquaman (voice)

Ernie Hudson
Cyborg (voice)

B.J. Ward
Wonder Woman (voice)

René Auberjonois
Desaad (voice)