THE MASS DEVICE
MINI-SERIES

The Joes first became animated in a 5-part cartoon miniseries which aired in 1983. The MASS Device mini-series introduced a device that could move, well, mass to other places. COBRA used this to their own advantages, but they needed the proper elements to work the MASS Device.

The series had alternate "looks" for several popular Joe characters. The Baroness did not have her black uniform with the red Cobra symbol; rather, she wore blue. Snake-Eyes wore the original uniform that he had worn with his first action figure (see below). When he appeared again in "The Revenge of Cobra," the 1985 uniform was used. Finally, Cobra Commander's mask was slightly altered, having blue underneath the silver mask rather than silver as used in the main G.I. Joe animated series.


EPISODES
#1 "G.I. Joe: A Real American Hero" (
Part 1 of 5 - 9/12/83)
#2 "Slave of the Cobra Master" (
Part 2 of 5 - 9/13/83)
#3 "The Worms of Death" (
Part 3 of 5 - 9/14/83)
#4 "Duel in the Devil's Cauldron" (
Part 4 of 5 - 9/15/83)
#5 "A Stake in the Serpent's Heart" (
Part 5 of 5 - 9/16/83)


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