2 th - level ▁intellect ▁and ▁member ▁of ▁the ▁Leg ion ▁of ▁Super h ero es ▁from ▁the ▁planet ▁Col u ▁in ▁the ▁ 3 1 st ▁Century . ▁ ▁Sam ▁Wit wer ▁as ▁Benjamin ▁Lock wood ▁/ ▁Agent ▁Liber ty ▁( season ▁ 4 ; ▁guest ▁season ▁ 5 ): ▁The ▁brilliant , ▁r uth less , ▁and ▁ter r ifying ▁founder ▁and ▁figure head ▁of ▁Children ▁of ▁Liber ty , ▁a ▁human - sup rem ac ist ▁hate ▁group ▁that ▁supports ▁a ▁human - first ▁world ▁order . ▁ ▁N icole ▁Main es ▁as ▁N ia ▁N al ▁/ ▁Dream er ▁( season ▁ 4 – present ): ▁A ▁soul ful ▁young ▁trans gender ▁woman ▁with ▁a ▁fier ce ▁drive ▁to ▁protect ▁others ▁and ▁the ▁new est ▁addition ▁to ▁the ▁Cat Co ▁reporting ▁team . ▁The ▁character ▁is ▁the ▁first ▁trans gender ▁super h ero ▁on ▁television . ▁ ▁April ▁Parker ▁Jones ▁as ▁Colonel ▁La uren ▁H ale y ▁( season ▁ 4 ): ▁A ▁hard line ▁career ▁military ▁woman ▁who ▁lives ▁and ▁dies ▁by ▁the ▁orders ▁of ▁her ▁command ing ▁officers . ▁D edic ated ▁to ▁her ▁country , ▁she ▁always ▁acts ▁in ▁its ▁best ▁interest ▁— ▁even ▁if ▁it ' s ▁not ▁her ▁own . ▁ ▁A zie ▁T es f ai ▁as ▁Kelly ▁O ls en ▁( season ▁ 5 ; ▁rec urr ing ▁season ▁ 4 ): ▁James ' s ▁younger , ▁no - n ons ense ▁sister , ▁recently ▁returned ▁to ▁the ▁United ▁States ▁following ▁a