▁Black ▁Leg ion ▁to ▁the ▁shr ink - ray - w ield ing ▁Professor ▁Nak aj ima . ▁Uncle ▁Sam ▁also ▁f ights ▁the ▁mad ▁scient ist ▁Dr . ▁Dir ge , ▁the ▁King ▁K iller , ▁and ▁the ▁ins an ity - ca using ▁Mad ▁Po et ." ▁ ▁DC ▁Comics ▁DC ▁Comics ▁acquired ▁the ▁character ▁as ▁part ▁of ▁its ▁ac quisition ▁of ▁the ▁Qu ality ▁characters ▁in ▁the ▁ 1 9 5 0 s , ▁and ▁he ▁was ▁used ▁as ▁a ▁supporting ▁character ▁in ▁Justice ▁League ▁of ▁America ▁in ▁the ▁ 1 9 7 0 s . ▁This ▁established ▁Uncle ▁Sam ▁as ▁the ▁leader ▁of ▁the ▁Fre edom ▁F igh ters , ▁a ▁team ▁of ▁former ▁Qu ality ▁characters ▁that ▁briefly ▁received ▁its ▁own ▁title . ▁This ▁team ▁was ▁initially ▁based ▁on ▁a ▁parallel ▁world ▁called ▁Earth - X , ▁where ▁World ▁War ▁II ▁had ▁last ed ▁into ▁the ▁ 1 9 7 0 s . ▁ ▁Uncle ▁Sam ' s ▁origin ▁was ▁re written ▁somewhat ▁in ▁The ▁Spect re , ▁where ▁Uncle ▁Sam ▁is ▁described ▁as ▁a ▁spiritual ▁entity ▁created ▁through ▁an ▁occ ult ▁rit ual ▁by ▁the ▁Found ing ▁F athers . ▁This ▁" Sp irit ▁of ▁America " ▁was ▁initially ▁bound ▁to ▁a ▁powerful ▁t alis man ▁and ▁would ▁take ▁physical ▁form ▁by ▁mer ging ▁with ▁a ▁dying ▁patri ot . ▁The ▁new ▁origin ▁states ▁that ▁the ▁Spirit ▁of ▁America ▁had ▁taken ▁human ▁form ▁as ▁the ▁Min ute - Man ▁during ▁the ▁Revolution ary ▁War , ▁Bro ther