▁and ▁Alex ▁when ▁she ▁ref uses . ▁ ▁In ▁the ▁fifth ▁season , ▁K ara ▁and ▁co . ▁find ▁themselves ▁facing ▁a ▁new ▁threat ▁known ▁as ▁Le vi athan , ▁who ▁sends ▁their ▁agent ▁R ama ▁Khan , ▁a ▁centuries - old ▁imm ort al ▁being ▁who ▁can ▁b end ▁the ▁Earth , ▁to ▁kill ▁K ara ▁but ▁is ▁eventually ▁defeated ▁with ▁the ▁help ▁with ▁her ▁friends . ▁After ▁a ▁Cris is ▁involving ▁the ▁destruction ▁of ▁the ▁mult iverse , ▁K ara ▁adjust s ▁her ▁new ▁life ▁on ▁the ▁newly ▁created ▁universe ▁" E arth - Pr ime ", ▁thanks ▁to ▁Oliver ▁Queen ' s ▁sacrifice ▁to ▁re build ▁the ▁mult iverse , ▁in ▁which ▁she ▁is ▁working ▁for ▁Lex , ▁who ▁now ▁own s ▁the ▁D . E . O . ▁ ▁Cast ▁and ▁characters ▁▁ ▁Mel issa ▁Ben o ist ▁as ▁K ara ▁Dan vers ▁/ ▁K ara ▁Z or - El ▁/ ▁Super g irl : ▁A ▁ 2 4 - year - old ▁K rypt onian ▁living ▁in ▁National ▁City , ▁who ▁must ▁em brace ▁her ▁powers ▁after ▁previously ▁hiding ▁them . ▁She ▁ass ists ▁her ▁adopt ive ▁sister ▁Alex ▁as ▁part ▁of ▁the ▁Department ▁of ▁Ext ra - Normal ▁Oper ations ▁( DE O ) ▁as ▁she ▁discovered ▁the ▁truth ▁that ▁her ▁adopt ive ▁father ▁also ▁worked ▁for ▁the ▁DE O ▁so ▁they ▁would ▁not ▁take ▁her , ▁while ▁Alex ' s ▁co - work ers ▁at ▁the ▁DE O ▁help ▁her ▁perfect ▁her ▁powers . ▁K ara