Hook is a giant, three legged, lizard like shade with several eyes hanging from it’s neck and possesses a hand at the end of it’s tail. It makes it’s lair near the Aerie where it attacked Kainé’s home pining down and killing Kainé’s grandmother Kali while sadistically enjoy Kainé’s despair. Hook left her mutilated, vengeful, and with an undying hatred of shades.
Vowing revenge Kainé later took out it’s left eye and during a second battle Hook spoke to Kainé in Kali’s voice trying to convince her to stop fighting. Hook would have succeeded if it not for a poor choice of words that convinced Kainé otherwise. While trying to flee Hook was grabbed by Nier and impaled on a support beam.