▁The ▁Lost ▁Hero , The ▁Blood ▁of ▁Olymp us ▁and ▁the ▁Dark ▁Prop he cy . ▁In ▁the ▁films , ▁she ▁is ▁port rayed ▁by ▁Pal oma ▁Mal in owski . ▁ ▁Due ▁to ▁her ▁mother ' s ▁ab us ive ▁nature , ▁Th alia ▁had ▁considered ▁leaving ▁home ▁since ▁she ▁was ▁little , ▁but ▁stayed ▁to ▁protect ▁Jason . ▁When ▁Jason ▁is ▁seem ingly ▁killed ▁during ▁a ▁visit ▁to ▁Son ora , ▁Th alia ▁finally ▁ran ▁away ▁and ▁stayed ▁with ▁Luke ▁and ▁An nab eth ▁until ▁they ▁met ▁Gro ver ▁when ▁she ▁was ▁ 1 2 . ▁When ▁they ▁reached ▁camp , ▁H ades ▁sent ▁a ▁hor de ▁of ▁hell ▁h ounds ▁that ▁Th alia ▁held ▁off , ▁sacrific ing ▁herself ▁for ▁her ▁friends . ▁Ze us ▁pit ied ▁his ▁daughter ▁and ▁turns ▁her ▁into ▁a ▁p ine ▁tree ▁where ▁her ▁spirit ▁then ▁provides ▁a ▁mag ical ▁bar rier ▁around ▁the ▁camp . ▁Seven ▁years ▁later , ▁she ▁is ▁p urg ed ▁from ▁the ▁p ine ▁tree ▁with ▁the ▁Golden ▁Fle e ce , ▁applied ▁to ▁save ▁it ▁from ▁po isons ▁that ▁were ▁weak ening ▁and ▁destroy ing ▁the ▁w ards ▁protect ing ▁the ▁dem ig ods . ▁At ▁the ▁end ▁of ▁The ▁T itan ' s ▁Cur se , ▁she ▁becomes ▁the ▁lieutenant ▁of ▁the ▁Hun ters ▁of ▁Ar tem is , ▁a ▁band ▁of ▁imm ort al ▁female ▁arch ers ▁who ▁serve ▁the ▁god dess ▁Ar tem is , ▁which ▁free zes ▁her ▁age ▁the ▁night ▁before ▁her ▁ 1