Character » Iron Grenadiers appears in 54 issues.
The founder and leader of the terrorist organization known as Cobra.
Duke is a member of the G.I. Joe team. He is second-in-command and the field leader of the team. He has the rank of First Sergeant.
Serpentor is an artificial being created by Dr. Mindbender to lead the terrorist organization, COBRA. Serpentor's genetic material came from some of the most notorious leaders in history.
Shockwave is the first S.W.A.T. specialist of the G. I. Joe team.
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