ised " ▁by ▁having ▁food ▁and ▁drink ▁close ▁to ▁him , ▁but ▁unable ▁to ▁enjoy ▁either . ▁He ▁becomes ▁the ▁activities ▁director ▁at ▁Camp ▁Half - B lo od ▁after ▁Ch ir on ▁is ▁fired . ▁He ▁appears ▁in ▁The ▁Sea ▁of ▁Mon sters ▁as ▁a ▁minor ▁character . ▁Even ▁when ▁h ired ▁as ▁the ▁activities ▁director , ▁he ▁could ▁not ▁eat ▁or ▁drink ▁as ▁the ▁food ▁kept ▁ev ading ▁him . ▁T antal us ▁is ▁shown ▁to ▁hate ▁Per cy ▁and ▁his ▁friends ▁even ▁more ▁than ▁he ▁h ates ▁most ▁half - blo ods , ▁yet ▁shows ▁favor it ism ▁to ▁Clar isse , ▁as ▁when ▁naming ▁her ▁hero ▁when ▁the ▁camp ▁was ▁attacked ▁by ▁Col ch is ▁Bull s ▁or ▁when ▁she ▁wins ▁the ▁ch ari ot ▁race ▁and ▁throwing ▁a ▁ban quet ▁in ▁her ▁honor . ▁When ▁T ys on ▁is ▁brought ▁to ▁camp , ▁T antal us ▁ins ult s ▁and ▁makes ▁fun ▁of ▁him ▁even ▁when ▁T ys on ▁is ▁claimed ▁by ▁P ose id on . ▁When ▁the ▁camp ▁is ▁attacked ▁by ▁a ▁large ▁f lock ▁of ▁St ym phal ian ▁birds , ▁T antal us ▁bl ames ▁it ▁on ▁Per cy , ▁An nab eth , ▁and ▁T ys on ' s ▁" bad ▁ch ari ot ▁driving " ▁despite ▁that ▁they ▁were ▁the ▁ones ▁who ▁defeated ▁the ▁birds . ▁At ▁the ▁end ▁of ▁the ▁book , ▁his ▁cur se ▁is ▁lifted ▁by ▁D ion ys us ▁just ▁before ▁he ▁is ▁sent ▁back ▁to ▁the ▁Under