▁ancient ▁energy - be ing ▁res emb ling ▁a ▁sphere ▁of ▁ir ides cent ▁light . ▁The ▁Aur ak le ▁species ▁emer ged ▁from ▁the ▁Source ▁bill ions ▁of ▁years ▁ago ▁at ▁the ▁dawn ▁of ▁time . ▁When ▁soci op ath ▁V io let ▁Har per ▁was ▁murder ed ▁by ▁Sy on ide , ▁an ▁oper ative ▁of ▁the ▁ 1 0 0 ▁and ▁Tob ias ▁Wh ale , ▁the ▁Aur ak le , ▁who ▁had ▁been ▁obser ving ▁her ▁out ▁of ▁curiosity , ▁was ▁su ck ed ▁into ▁the ▁newly ▁vac ant ▁body , ▁re anim ating ▁the ▁dece ased ▁body . ▁The ▁shock ▁of ▁the ▁death ▁and ▁res urre ction ▁induced ▁a ▁prof ound ▁loss ▁of ▁memory ▁in ▁the ▁new ▁combined ▁entity . ▁She ▁was ▁subsequently ▁found ▁and ▁rec ru ited ▁by ▁Bat man ▁to ▁serve ▁as ▁a ▁member ▁of ▁the ▁Out s iders . ▁In ▁one ▁early ▁incident , ▁H alo ▁g ains ▁access ▁to ▁the ▁mem ories ▁of ▁the ▁long - l ived ▁Aur ak le ▁and ▁becomes ▁emot ional ▁over ▁the ▁t endency ▁of ▁human ▁be ings ▁to ▁kill ▁each ▁other . ▁H alo ▁later ▁has ▁to ▁deal ▁with ▁the ▁consequences ▁of ▁her ▁body ' s ▁previous ▁actions , ▁which ▁required ▁the ▁assistance ▁of ▁the ▁Out s iders ▁team ▁to ▁resolve . ▁ ▁The ▁young ▁H alo ▁is ▁initially ▁the ▁legal ▁w ard ▁of ▁her ▁friend ▁and ▁Out s iders ▁team mate ▁Kat ana . ▁During ▁her ▁st int ▁in ▁the ▁Out s iders , ▁she ▁g ains