Filecards are printed inserts or attachments that came with most G.I. Joe action figures. It is the profile information of the character. The trend for filecards started with the A Real American Hero series. For vehicles and playsets, the equivalent insert would be the blueprint. Originally, G.I. Joe comics writer Larry Hama created "dossiers" as a way to keep track of the characters he would be writing. As fate would have it, representatives from Hasbro saw these "dossiers" and figured they would be an additional attraction to the action figures' blister packs.