G.I. Joe: A Real American Hero - Season 3 - Eps 2: Operation Dragonfire (2)
Cobra has a map showing the locations of Dragonfire around the world, and the Joes and Cobra battle over one of the locations in a mountain. Baroness and Gnawgahyde use the Dragonfire to DNA convert Cobra Commander back into human form. The Joes manage to get inside the mountain base, but are flooded out...
About G.I. Joe: A Real American Hero

Title: G.I. Joe: A Real American Hero
First Air Date: 1983-09-12
Last Air Date: 1992-01-20
Status: Ended
Rating: 7.7/10 (from 70 votes)
Language: EN
Seasons: 5
Total Episodes: 139
Network: Syndication
Genres: Animation, Action & Adventure, Kids
Production Companies: Sunbow Productions, DiC Entertainment
Synopsis
G.I. Joe: A Real American Hero is a half-hour American animated television series based on the successful toyline from Hasbro and the comic book series from Marvel Comics. The cartoon had its beginnings with two five-part mini-series in 1983 and 1984, then became a regular series that ran in syndication from 1985 to 1986. Ron Friedman created the G.I. Joe animated series for television, and wrote all four miniseries. The fourth mini-series was intended to be a feature film, but due to production difficulties was released as a television mini-series.
Cast

Ted Harrison
Duke (voice)

Christopher Collins
Cobra Commander (voice)

Maurice LaMarche
Destro (voice)

Don Brown
Sub-Zero (voice)

Garry Chalk
Pathfinder (voice)

Morgan Lofting
Baroness (voice)

Suzanne Errett-Balcom
Lady Jane (voice)