Kinzie

"If you ever need a new girlfriend...well, I think you'd look great in an iron collar and an orange jumpsuit."

- Kinzie to Percy

Kinzie is an Amazon who serves Queen Hylla. She is the daughter of a Nymph.

The Son of Neptune
She is seen in the Amazon base along with Hylla and others. Kinzie runs the front desk at the Amazon business. She seems to be Hylla's close friend and is very loyal to her. She later "helps" Hazel escape from the compound along with Frank and Percy. She is a very skilled fighter. She could move faster than Hazel's eyes could follow and she can pull her sword out of thin air, which could imply that her mother is a Wind Nymph.

It is also hinted that she may have a crush on Percy, since she tells him that she is available if he ever needs a new girlfriend (see quote above) even though he told her he already had a girlfriend at his old camp, Annabeth.