Joker Star Cluster
The Five Star Stories.
History.. Kind of. There's Timey Wimey Stuff
Nations
Technology
Trivia
This is linked to the Pentagona Star Cluster through Time And Relative Dimensions In Space. Trying to make a perfect line up of FSS and L-Gaim is harder than a concrete timeline of the DC Universe with all the reboots, but it's pretty clear Heavy Metals are mass production Mortar Headds. Probably. Hell the L-Gaim MK. II and the Original Aug are probably more of a Mortar Headd than Heavy Metals.