The Worms of Death

The Joes and Cobra vie to find the heavy water element. Mysterious underwater tube worms cause both teams to agree to a ceasefire to thwart off the worms, allowing both teams to successfully recover the heavy water. Snake Eyes struggles to remain alive in a snow storm and is suffering from radioactive poisoning. He manages to save a wolf (Timber) who becomes his makeshift pet. The pair are rescued by a blind hermit who cures Snake Eyes of his poisoning and injuries. The Joes are overjoyed to see their comrade alive and with the crystals. However, his canister was booby trapped by Cobra; causing poison gas to flood the air.

"Now you know. And knowing is half the battle." The Sunbow run closed every episode with a public-service spot delivered by a Joe character, addressing kids on a real-world hazard or virtue. The cartoon's deeper ethic, threaded into the writing across the run, was that Cobra's worldview was based on fear and the Joes' was based on responsibility.

Chris Latta as Cobra Commander

Michael Bell as Duke, Lifeline, Xamot, Blowtorch

Arthur Burghardt as Destro

Morgan Lofting as Baroness

Mary McDonald-Lewis as Lady Jaye, Cover Girl

Bill Ratner as Flint

B.J. Ward as Scarlett

Neil Ross as Shipwreck, Doc, Tomax

Frank Welker as Torch, Wild Weasel, Junkyard, Zandar

Zack Hoffman as Zartan

Charlie Adler as Low-Light

Dick Gautier as Serpentor

1. M.A.S.S. Device five-part miniseries (1983). The original Sunbow miniseries that launched the G.I. Joe animated franchise. Premiered in syndication September 12 to 16, 1983.
2. Production code: 4007
3. Studio: Marvel Productions / Sunbow Productions / Toei Doga
4. Originally aired: September 14, 1983 in afternoon syndication.