▁When ▁G le es on ▁H edge ▁disco vers ▁Ph or c ys ' ▁r use , ▁he ▁fre es ▁Per cy ▁and ▁Frank ▁after ▁knock ing ▁" K ate " ▁out . ▁After ▁Per cy , ▁G le es on , ▁and ▁Frank ▁escape ▁from ▁the ▁aqu arium , ▁K eto ▁sends ▁a ▁sk ol op endra ▁( sh rim p ▁mon ster ▁- ▁one ▁of ▁her ▁children ) ▁after ▁them . ▁ ▁Ny x ▁– ▁The ▁prim ord ial ▁god dess ▁of ▁night , ▁said ▁to ▁be ▁the ▁oldest ▁being ▁in ▁the ▁universe ▁besides ▁Cha os ▁itself . ▁In ▁The ▁House ▁of ▁H ades , ▁Per cy ▁and ▁An nab eth ▁accident ally ▁w ander ▁into ▁Ny x ' s ▁territory ▁and ▁try ▁to ▁pose ▁as ▁tour ists ▁gu ided ▁by ▁a ▁bro ch ure ▁that ▁does ▁not ▁mention ▁Ny x . ▁An ger ed , ▁Ny x ▁shows ▁just ▁how ▁important ▁she ▁is ▁and ▁summ ons ▁her ▁children , ▁who ▁emit ▁pitch - black ▁darkness ▁that ▁even ▁Ny x ▁herself ▁cannot ▁see ▁through ▁it . ▁Before ▁she ▁can ▁catch ▁them , ▁the ▁couple ▁leave ▁through ▁the ▁M ansion ▁of ▁Night . ▁Ny x ▁is ▁described ▁by ▁An nab eth ▁to ▁be ▁" as ▁tall ▁as ▁the ▁Ath ena ▁Par then os , ▁but ▁very ▁much ▁alive ." ▁ ▁Our anos ▁– ▁The ▁emb od iment ▁of ▁the ▁sky , ▁who ▁is ▁the ▁husband ▁of ▁G ae a ▁and ▁the ▁father ▁of ▁the ▁Tit ans . ▁When ▁G ae a ▁gave