▁g host ▁of ▁Ach illes ▁appears ▁briefly ▁in ▁The ▁Last ▁Olymp ian , ▁warning ▁Per cy ▁about ▁the ▁Cur se ▁of ▁Ach illes . ▁ ▁Ag am eth us ▁– ▁The ▁son ▁of ▁King ▁Er gin us ▁and ▁mort al ▁half - bro ther ▁of ▁Tro phon ius . ▁He ▁was ▁dec ap itated ▁by ▁Tro phon ius ▁to ▁spare ▁the ▁latter ▁from ▁being ▁captured ▁following ▁a ▁dis astr ous ▁attempt ▁to ▁ste al ▁the ▁rich es ▁of ▁King ▁Hy rie us . ▁His ▁head less ▁g host ▁res ur faces ▁to ▁deliver ▁baby ▁Georg ina ▁to ▁Hem it he a ▁and ▁Joseph ine ▁at ▁Way station ▁and ▁later ▁becomes ▁a ▁constant ▁visitor ▁of ▁the ▁san ctu ary . ▁L ack ing ▁a ▁head , ▁he ▁speak s ▁by ▁arr anging ▁the ▁letters ▁of ▁ ▁Magic ▁ 8 ▁Ball . ▁ ▁Char on ▁– ▁Char on ▁is ▁the ▁fer ry man ▁who ▁car ries ▁the ▁dead ▁across ▁the ▁River ▁St y x ▁to ▁the ▁under world . ▁Per cy ▁and ▁his ▁friends ▁meet ▁him ▁in ▁The ▁Light ning ▁Th ief . ▁He ▁also ▁states ▁he ▁does ▁not ▁like ▁being ▁confused ▁with ▁the ▁cent aur ▁Ch ir on . ▁He ▁lik es ▁Italian ▁su its . ▁In ▁the ▁film ▁adaptation , ▁Char on ▁is ▁played ▁by ▁Julian ▁Rich ings . ▁In ▁the ▁musical , ▁Char on ▁is ▁port rayed ▁by ▁Car rie ▁Comp ere . ▁ ▁Ch ry sa or ▁– ▁A ▁half - gi ant ▁who ▁is ▁the ▁son ▁of ▁Med usa ▁and