▁is ▁among ▁the ▁Emp ous ai ▁that ▁make ▁their ▁way ▁to ▁the ▁Do ors ▁of ▁Death ▁so ▁that ▁K elli ▁can ▁get ▁even ▁with ▁Per cy . ▁With ▁the ▁help ▁of ▁Bob ▁the ▁T itan , ▁Per cy ▁and ▁An nab eth ▁defeat ▁K elli ▁and ▁the ▁Emp ous ai . ▁ ▁Ser aph one ▁– ▁An ▁Emp ous ai ▁who ▁dist rust s ▁K elli ▁and ▁fear s ▁H ec ate . ▁In ▁The ▁House ▁of ▁H ades , ▁Ser aph one ▁is ▁among ▁the ▁Emp ous ai ▁that ▁make ▁their ▁way ▁to ▁the ▁Do ors ▁of ▁Death . ▁When ▁they ▁attack ▁Per cy ▁and ▁An nab eth , ▁An nab eth ▁tr icks ▁the ▁Emp ous ai ▁into ▁bel ieving ▁that ▁K elli ▁was ▁useless ▁and ▁weak ▁and ▁that ▁she ▁was ▁leading ▁them ▁all ▁into ▁danger . ▁An nab eth ▁tells ▁them ▁to ▁follow ▁S ere phone ▁as ▁she ▁was ▁older ▁and ▁w iser . ▁H ear ing ▁this ▁made ▁S ere phone ▁happy ▁and ▁declared ▁that ▁she ▁was ▁a ▁leader . ▁K elli ▁became ▁angry ▁and ▁killed ▁S ere phone . ▁ ▁Tam mi ▁– ▁An ▁Emp ous ai ▁that ▁pos es ▁as ▁a ▁cheer le ader ▁in ▁The ▁Battle ▁of ▁the ▁Lab yr inth . ▁She ▁was ▁killed ▁by ▁Per cy ▁Jackson . ▁ ▁Eur yn om os ▁- ▁A ▁g hou lish ▁creature ▁from ▁the ▁Under world ▁that ▁is ▁liked ▁by ▁H ades ▁where ▁anyone ▁struck ▁by ▁its ▁cla ws ▁will ▁die ▁of ▁a ▁was ting ▁disease .