. ▁He ▁is ▁finally ▁tra pped ▁in ▁a ▁snow ▁glo be ▁by ▁Carter , ▁Sad ie , ▁Per cy ▁Jackson , ▁and ▁An nab eth ▁Ch ase . ▁ ▁Sarah ▁Jacob i ▁– ▁The ▁leader ▁of ▁a ▁group ▁of ▁re bel ▁mag icians , ▁a ▁former ▁House ▁scri be ▁imprison ed ▁for ▁causing ▁the ▁ 2 0 0 4 ▁Indian ▁Ocean ▁earth qu ake ▁and ▁t sun ami . ▁In ▁The ▁Ser pent ' s ▁Sh adow , ▁she ▁man ages ▁to ▁am ass ▁an ▁al liance ▁of ▁reb els ▁in ▁league ▁with ▁Ap oph is , ▁but ▁is ▁van qu ished ▁by ▁An ub is / W alt ▁Stone , ▁who ▁b ury ▁her ▁under ground . ▁ ▁K w ai ▁– ▁Sarah ▁Jacob i ' s ▁assistant , ▁the ▁House ▁of ▁Life ' s ▁persistent ▁oppon ent ▁throughout ▁the ▁later ▁books ▁and ▁also ▁a ▁brief ▁host ▁of ▁Ap oph is . ▁ ▁Egypt ian ▁cre atures ▁ ▁Am mit ▁the ▁Dev our er ▁— ▁A ▁part - hi ppo , ▁part - c roc od ile , ▁part - l ion ▁demon ▁who ▁dev oured ▁sou ls ▁that ▁were ▁jud ged ▁un worth y ▁in ▁the ▁H alls ▁of ▁Jud gment . ▁The ▁K ane ▁Chron icles ▁present ▁a ▁different ▁picture ▁of ▁Am mit ▁than ▁is ▁typical , ▁by ▁port ray ing ▁the ▁demon ▁as ▁both ▁no ▁larger ▁than ▁a ▁to y ▁po od le ▁and ▁as ▁a ▁male . ▁ ▁D ough boy ▁— ▁Julius ▁K ane ' s ▁w