Why G.I. Joe Classified Series 6 Inch Figures Are So Popular The G.I. Joe Classified Series continues to expand with new 6-inch scale figures available for pre-order and shipping now on Amazon. From Cobra troop builders to classic G.I. Joe specialists, these latest Classified Series releases are must-haves for collectors. The Classified Series is personally my favorite current toy line to collect. The detailing, articulation, and modern updates to classic characters make th