emed ▁non - can on ical ▁to ▁the ▁series ▁itself ▁by ▁Rick ▁Ri ord an , ▁with ▁the ▁events ▁dep icted ▁being ▁directly ▁contrad icted ▁in ▁The ▁House ▁of ▁H ades ▁and ▁The ▁Blood ▁of ▁Olymp us , ▁was ▁written ▁by ▁Ri ord an ' s ▁son ▁H ale y ▁Ri ord an . ▁ ▁Char acters ▁ ▁Gree ks ▁ ▁Per cy ▁Jackson : ▁The ▁ 1 6 - year - old ▁son ▁of ▁P ose id on ▁from ▁Camp ▁Half - B lo od , ▁Per cy ▁is ▁the ▁narr ator ▁and ▁main ▁protagon ist ▁of ▁the ▁preceding ▁series ▁Per cy ▁Jackson ▁& ▁the ▁Olymp ians . ▁In ▁The ▁Son ▁of ▁Ne pt une , ▁he ▁is ▁dep icted ▁fighting ▁am nes ia , ▁during ▁which ▁his ▁only ▁memory ▁is ▁his ▁girl friend , ▁An nab eth ▁Ch ase . ▁ ▁An nab eth ▁Ch ase : ▁An nab eth , ▁ 1 7 ▁years ▁old ▁and ▁a ▁daughter ▁of ▁Ath ena , ▁is ▁cred ited ▁as ▁" the ▁smart est ▁girl ▁in ▁camp " ▁by ▁Per cy ▁Jackson , ▁a ▁comment ▁that ▁is ▁true ▁and ▁well - des erved . ▁She ▁is ▁a ▁gift ed ▁and ▁dedicated ▁architect ▁as ▁well . ▁ ▁Pi per ▁Mc Le an : ▁A ▁ 1 5 - year - old ▁daughter ▁of ▁A ph rod ite . ▁She ▁is ▁one ▁of ▁the ▁few ▁children ▁of ▁A ph rod ite ▁who ▁has ▁the ▁rare ▁her edit ary ▁gift ▁of ▁" char ms pe ak "