are ▁in ▁she er ▁terror ▁and ▁arm or - cor rod ing ▁acid ic ▁ven om . ▁In ▁The ▁Last ▁Olymp ian , ▁K ron os ▁un le ashed ▁it ▁upon ▁Manh attan ▁where ▁it ▁killed ▁many ▁half - blo ods ▁before ▁being ▁killed ▁by ▁Clar isse ▁La ▁R ue . ▁ ▁Ma e onian ▁D rak on ▁– ▁A ▁green ▁and ▁yellow ▁D rak on ▁that ▁once ▁attacked ▁Ma eno ia , ▁Turkey . ▁In ▁The ▁House ▁of ▁H ades , ▁the ▁Ma e onian ▁D rak on ▁res ides ▁in ▁the ▁sw amps ▁of ▁T art arus . ▁It ▁attacked ▁Per cy , ▁An nab eth , ▁and ▁Bob ▁the ▁T itan ▁and ▁was ▁killed ▁by ▁Dam as en . ▁Dam as en ' s ▁cur se ▁was ▁to ▁sl ay ▁the ▁Ma e onian ▁D rak on ▁every ▁day . ▁ ▁E id ol ons ▁– ▁A ▁race ▁of ▁spirits ▁that ▁can ▁possess ▁dem ig ods . ▁In ▁The ▁Mark ▁of ▁Ath ena , ▁the ▁E id ol ons ▁work ▁for ▁G ae a . ▁ ▁Ele ph ant ▁- ▁The ▁ele ph ants ▁are ▁large ▁her b iv ores ▁native ▁to ▁Africa ▁and ▁the ▁southern ▁parts ▁of ▁Asia . ▁Any ▁ele ph ant ▁that ▁is ▁b red for ▁war ▁is ▁called ▁a ▁war ▁ele ph ant . ▁ ▁Hann ib al ▁- ▁A ▁war ▁ele ph ant ▁that ▁is ▁owned ▁by ▁Camp ▁Jup iter ▁and ▁is ▁often ▁c ared ▁for ▁by ▁Bobby . ▁ ▁Liv ia ▁- ▁A ▁war