ion ys us ▁and ▁the ▁tw in ▁brother ▁of ▁Cast or ▁( both ▁of ▁whom ▁are ▁named ▁after ▁the ▁Gem ini ). ▁He ▁surv ives ▁the ▁war ▁against ▁the ▁Tit ans , ▁though ▁his ▁brother ▁dies ▁in ▁The ▁Battle ▁of ▁the ▁Lab yr inth . ▁ ▁P ran jal ▁- ▁A ▁son ▁of ▁As cle pi us ▁who ▁works ▁as ▁Camp ▁Jup iter ' s ▁he aler . ▁In ▁" The ▁T yr ant ' s ▁T omb ," ▁he ▁and ▁Meg ▁gather ▁B uster ' s ▁horn ▁sh av ings ▁as ▁one ▁of ▁the ▁ing red ients ▁for ▁a ▁medicine ▁to ▁he al ▁Apol lo ' s ▁st om ach ▁cut . ▁ ▁Sh erman ▁Yang ▁– ▁A ▁son ▁of ▁A res ▁who ▁was ▁left ▁in ▁the ▁care ▁of ▁his ▁cabin ▁as ▁Clar isse , ▁the ▁coun sel or , ▁is ▁att ending ▁university . ▁He ▁marks ▁Meg ▁for ▁target ▁after ▁the ▁latter ▁k icks ▁him ▁in ▁the ▁c rot ch , ▁together ▁with ▁Con nor . ▁Like ▁the ▁other ▁children ▁of ▁A res , ▁he ▁is ▁easily ▁prov oked . ▁He ▁is ▁d ating ▁Mir anda . ▁ ▁Sil ena ▁Be a ure g ard ▁– ▁The ▁head ▁of ▁the ▁A ph rod ite ▁cabin ▁for ▁most ▁of ▁the ▁Per cy ▁Jackson ▁& ▁the ▁Olymp ians ▁series . ▁She ▁is ▁kind ▁to ▁Per cy ▁and ▁be fri ends ▁Clar isse ▁La ▁R ue ▁after ▁giving ▁the ▁other ▁girl ▁advice ▁about ▁her ▁first ▁relationship . ▁She ▁served ▁as ▁a ▁sp y ▁for