▁Olymp ians ' ▁Roman ▁aspects ▁receive ▁their ▁training . ▁In ▁The ▁Lost ▁Hero , ▁he ▁begins ▁a ▁rom antic ▁relationship ▁with ▁Pi per ▁Mc Le an . ▁ ▁Jason ▁is ▁described ▁as ▁having ▁bl ond ▁hair , ▁blue ▁eyes , ▁and ▁a ▁scar ▁above ▁his ▁upper ▁lip ▁( sa id ▁to ▁be ▁a ▁result ▁of ▁an ▁attempt ▁to ▁eat ▁a ▁st ap ler ). ▁He ▁is ▁of ▁above - aver age ▁height , ▁with ▁an ▁athlet ic ▁build ▁and ▁mus cular ▁arms . ▁By ▁the ▁age ▁of ▁fifteen , ▁he ▁has ▁earned ▁the ▁rank ▁of ▁pra et or ▁and ▁leads ▁the ▁leg ion ▁with ▁his ▁long time ▁partner , ▁Re yna . ▁Jason ▁also ▁coordin ated ▁the ▁Roman ▁camp ' s ▁attack ▁on ▁the ▁T itan ▁force . ▁He ▁led ▁an ▁assault ▁against ▁Mount ▁Tam al p ais / O th rys , ▁a ▁T itan ▁strong hold ▁near ▁San ▁Francisco , ▁and ▁defeated ▁the ▁T itan ▁K rios ▁in ▁combat , ▁much ▁as ▁Per cy ▁Jackson ▁defeated ▁Hyper ion ▁and ▁helped ▁to ▁defeat ▁K ron os . ▁Of ▁all ▁the ▁characters ▁in ▁the ▁series , ▁Jason ▁is ▁the ▁one ▁who ▁strugg les ▁the ▁most ▁with ▁the ▁differences ▁between ▁the ▁Greek ▁and ▁Roman ▁pers pect ives . ▁Pi per ▁Mc Le an ▁describes ▁Jason ▁as ▁very ▁rule - ▁and ▁duty - orient ed , ▁though ▁Term inus ▁describes ▁him ▁as ▁a ▁" rule - fl outer ." ▁When ▁the ▁Ar go ▁II ▁is ▁stuck ▁in ▁North ▁Africa , ▁he ▁must ▁choose ▁one ▁identity