▁dead ▁many ▁times ▁but ▁only ▁meets ▁her ▁when ▁Per cy ▁comes . ▁In ▁The ▁Battle ▁of ▁the ▁Lab yr inth , ▁Bian ca ▁( as ▁a ▁spirit ) ▁ ▁Later ▁in ▁The ▁Son ▁of ▁Ne pt une , ▁she ▁tries ▁for ▁reb irth ▁on ▁the ▁Is le ▁of ▁the ▁Bl est . ▁ ▁Bill ie ▁Ng ▁– ▁Bill ie ▁is ▁a ▁daughter ▁of ▁Dem eter . ▁In ▁The ▁H idden ▁Oracle , ▁Bill ie ▁is ▁the ▁only ▁dem ig od ▁of ▁the ▁Dem eter ▁cabin ▁left ▁in ▁the ▁winter ▁season ▁after ▁the ▁disapp earance ▁of ▁her ▁coun sel or , ▁Mir anda , ▁until ▁the ▁arrival ▁of ▁Meg . ▁She ▁points ▁out ▁Meg ' s ▁parent age ▁during ▁her ▁claim ing , ▁in ▁which ▁a ▁sick le ▁and ▁gra in , ▁symbols ▁of ▁Dem eter , ▁g low ▁above ▁her ▁head . ▁ ▁Bobby ▁– ▁Bobby ▁is ▁a ▁care g iver ▁of ▁Camp ▁Jup iter ' s ▁war ▁ele ph ant ▁Hann ib al , ▁first ▁mentioned ▁in ▁The ▁Son ▁of ▁Ne pt une . ▁His ▁Olymp ian ▁parent ▁is ▁unknown . ▁ ▁But ch ▁– ▁But ch ▁is ▁the ▁head ▁coun sel or ▁of ▁the ▁I ris ▁cabin ▁at ▁Camp ▁Half - B lo od . ▁He ▁and ▁An nab eth ▁are ▁the ▁ones ▁who ▁bring ▁Jason , ▁Pi per , ▁and ▁Leo ▁to ▁the ▁camp ▁at ▁the ▁beginning ▁of ▁The ▁Lost ▁Hero . ▁He ▁is ▁bald ▁and ▁mus cular , ▁with ▁a ▁t atto o ▁of ▁a ▁rain bow ▁on ▁his