▁as ▁Cal ig ula ▁has ▁the ▁P and ai ▁they ▁sub du ed ▁executed . ▁Before ▁he ▁can ▁have ▁Meg ▁and ▁Jason ▁Grace ▁executed , ▁Cal ig ula ▁is ▁st unn ed ▁when ▁Apol lo ▁threat ens ▁to ▁commit ▁suic ide . ▁After ▁Apol lo ▁st abs ▁himself ▁while ▁Cal ig ula ▁k ills ▁Fl ange ▁following ▁the ▁news ▁of ▁the ▁attack ▁on ▁Camp ▁Jup iter ▁ending ▁in ▁failure , ▁Cal ig ula ▁s ails ▁north ▁with ▁his ▁gu ards . ▁M ede a ▁meets ▁with ▁Cal ig ula ▁and ▁advis es ▁that ▁performs ▁a ▁rit ual ▁before ▁Apol lo ▁dies . ▁Cal ig ula ▁later ▁f ights ▁Jason ▁and ▁Temp est ▁on ▁the ▁back ▁of ▁Inc it atus ▁where ▁he ▁man ages ▁to ▁kill ▁Jason . ▁After ▁making ▁sure ▁that ▁he ▁is ▁dead , ▁Cal ig ula ▁sets ▁sail ▁for ▁the ▁Bay ▁Area . ▁Later , ▁Cal ig ula ▁joins ▁forces ▁with ▁Com mod us ▁and ▁Tar quin ▁to ▁destroy ▁Camp ▁Jup iter ▁but ▁ends ▁up ▁being ▁killed ▁by ▁Frank . ▁ ▁King ▁Tar quin ▁- ▁One ▁of ▁the ▁three ▁main ▁ant agon ists ▁in ▁The ▁T yr ant ' s ▁T omb ▁alongside ▁Com mod us ▁and ▁Cal ig ula . ▁Tar quin ▁is ▁the ▁last ▁king ▁of ▁Rome ▁and ▁is ▁dep icted ▁as ▁a ▁z omb ie . ▁He ▁participated ▁in ▁the ▁Battle ▁of ▁San ▁Francisco ▁Bay ▁where ▁he ▁target ed ▁the ▁Sib y ill in ▁Books . ▁Tar quin ▁was ▁killed ▁by ▁Haz el ▁and ▁D iana . ▁