Origins of characters whose name contains “Serpentor”

IssueTitleNotes
49G.I. Joe, A Real American Hero1st Appearance Leatherneck; 1st appearance Lift-Ticket; 1st appearance Slip Stream; 1st appearance Serpentor; Origin of Serpentor
49/NSG.I. Joe, a Real American Hero1st Appearance Leatherneck; 1st appearance Lift-Ticket; 1st appearance Serpentor; 1st appearance Slip Stream; Origin of Serpentor
49G.I. Joe, a Real American Hero (Canadian Edition)1st Appearance Leatherneck; 1st Appearance Lift-Ticket; 1st Appearance Slip Stream; 1st Appearance Serpentor; Origin of Serpentor