▁Tri ple ▁G ▁R anch ▁with ▁Orth rus ▁guard ing ▁the ▁ran ch . ▁He ▁gave ▁Per cy ▁an ▁apparently ▁impossible ▁task ; ▁clean ing ▁out ▁the ▁st ables ▁of ▁car n iv orous ▁horses , ▁one ▁of ▁the ▁Lab ors ▁of ▁Her cules . ▁Per cy ▁managed ▁to ▁complete ▁the ▁task , ▁but ▁G ery on ▁went ▁back ▁on ▁his ▁deal ▁to ▁let ▁Per cy ' s ▁friends ▁free ▁and ▁the ▁two ▁fought . ▁Per cy ▁found ▁G ery on ▁a ▁strong ▁oppon ent , ▁as ▁G ery on ' s ▁three ▁hearts ▁made ▁him ▁almost ▁impossible ▁to ▁defeat . ▁Per cy ▁defeated ▁G ery on ▁with ▁a ▁well ▁placed ▁arrow ▁( th anks ▁to ▁H era ) ▁that ▁went ▁through ▁G ery on ' s ▁side ▁hitting ▁all ▁three ▁hearts ▁at ▁once , ▁killing ▁G ery on . ▁In ▁The ▁House ▁of ▁H ades , ▁G ery on ▁had ▁curs ed ▁Per cy ▁to ▁feel ▁the ▁pain ▁he ▁had ▁when ▁Per cy ▁killed ▁him . ▁The ▁A rai ▁later ▁told ▁Per cy ▁about ▁this . ▁Per cy ▁later ▁sp otted ▁G ery on ▁among ▁the ▁characters ▁await ing ▁their ▁turn ▁to ▁go ▁through ▁the ▁Do ors ▁of ▁Death . ▁ ▁Gh oul ▁– ▁The ▁G hou ls ▁serve ▁as ▁security ▁gu ards ▁in ▁the ▁Under world ▁and ▁make ▁a ▁sound ▁that ▁is ▁similar ▁to ▁b ats . ▁They ▁esc ort ▁the ▁sou ls ▁of ▁the ▁w icked ▁to ▁the ▁Field s ▁of ▁P un ishment ▁as ▁seen ▁in ▁The ▁Light ning