Players of FASA's BattleTech tabletop strategy game universe will instantly recognize many of the Revell models as Mechs from the original Role Playing Game sourcebooks. The reason for this is that all of the original edition's 'Mech visuals were based on designs from a variety of anime series, including Macross, Dougram and Crusher Joe, some of which Revell kits are sourced. FASA eventually became embroiled in a lawsuit with Harmony Gold regarding the use of Macross images, and after which FASA removed all Macross related images along with any other images not created in house from their Sourcebooks. Those 'Mechs would later be known by BattleTech fans as ' The Unseen '.