▁never ▁has ▁time ▁to ▁take ▁care ▁of ▁them . ▁Apol lo ▁was ▁una ware ▁that ▁he ▁was ▁using ▁some ▁of ▁the ▁cattle ▁for ▁meat ▁and ▁feed ing ▁them ▁to ▁the ▁mon sters ▁that ▁work ▁for ▁K ron os . ▁Although ▁Apol lo ▁didn ' t ▁have ▁any ▁cattle ▁in ▁actual ▁Greek ▁myth ology , ▁these ▁cattle ▁are ▁based ▁on ▁the ▁C attle ▁of ▁Hel ios . ▁ ▁A rai ▁– ▁Wing ed ▁female ▁da em ons ▁who ▁inhab it ▁T art arus . ▁They ▁are ▁similar ▁to ▁the ▁Fur ies , ▁but ▁their ▁number ▁is ▁not ▁limited ▁to ▁three , ▁and ▁they ▁are ▁under ▁control ▁of ▁Ny x ▁instead ▁of ▁H ades . ▁The ▁spirits ▁carry ▁the ▁grud ge ▁of ▁anyone ▁whom ▁their ▁k iller ▁have ▁wrong ed ; ▁when ▁Per cy ▁k ills ▁some ▁of ▁them , ▁they ▁release ▁the ▁grud ges ▁of ▁K amp ê ' s ▁death ▁by ▁cr ushing ▁and ▁Cal y ps o ' s ▁isol ation ▁in ▁O gy gia . ▁ ▁Ar ion ▁– ▁A ▁horse ▁born ▁to ▁Ne pt une ▁and ▁Cer es , ▁making ▁him ▁Per cy ' s ▁half - bro ther . ▁He ▁appears ▁in ▁The ▁Son ▁of ▁Ne pt une ▁where ▁Haz el ▁fre es ▁him ▁from ▁the ▁Ama z ons . ▁He ▁is ▁described ▁as ▁having ▁a ▁tan ▁coat ▁with ▁a ▁black ▁man e ▁and ▁tail . ▁He ▁is ▁a ▁free ▁spirit ▁and ▁seems ▁to ▁have ▁a ▁bad ▁temper , ▁being ▁known ▁to ▁cur se ▁when ▁his ▁ab ilities ▁are