Kalia Carlisle

Kalia Carlisle is the Number 2 Reaper and the daughter of Sorin Carlisle and an unknown man. Not much has been revealed about Kalia and her relationship with the church, however she seems to be close to Gene Sis. Whether they are in some kind of relationship or they are mentor and apprentice is unknown, however she seems to obey his commands.

Personality
Kalia seems bitter, angry and resentful. She has a short temper and a seemingly large ego, based on how she interacted with Sorin. She is not a happy person - she is possibly suffering from severe depression and her hatred has made her extremely aggressive and volatile.

Lady of the Woods Arc
The first time Kalia is mentioned is when Sorin sees her name in the roster, and seeks her out.

Amelia Arc
Five years prior to the start of the story, Kalia became a Reaper, immediately rising to the Number 2 spot. Her rise to power made her something of an urban legend among the Reapers, most of whom have never even seen her in the flesh. At some point over the course of the next 5 years, she was assigned the task of executing former Number 5 Johann Song. She succeeded, but this was witnessed by Amelia Savos. After the execution, she disappeared for several years, according to Balota.

The Shepherd Arc
After finding Sorin in the ruins of her childhood home, Kalia attacked her, stating that she hates Sorin and revealing that she is her daughter. Kalia easily defeats and kills Sorin, and then ties her up and proceeds to torture and kill her over and over again, getting increasingly angrier over Sorin's apparent lack of memory. While venting to Gene, asking why Sorin can't remember her sin, Sorin escapes by wounding Kalia and running.

After recovering, Kalia pursued Sorin for several days, eventually coming across The Shepherd. In her anger, she threatened to kill the Shepherd if he found Sorin and shielded her.

Powers and Abilities
Kalia possesses all the powers of a Reaper, including increased agility, speed, strength, and healing, as well as the ability to come back to life. Like all Reapers, she is able to enter the unseen world and slay the Descended and Twisted.

She is fast and strong, wielding her sword with considerable skill. Not much else about her abilities is known, however it is suggested that most Reapers fear her.

Trivia

 * Kalia is the youngest Reaper alive, currently being 14 years old, meaning she became a Reaper at the age of 9.