Briarlight

Briarkit is a dark brown she-kit.

Eclipse

 * She is born to Graystripe and Millie, along with her brother Bumblekit and her sister Blossomkit. Millie placed her in Mousefur's care before going to get the other kits to watch their first warrior naming ceremony, which is Lionpaw's, Hollypaw's and Cinderpaw's warrior ceremony. She also is described as a tom at times.

Long Shadows

 * Her mother and she were the first to catch greencough during the greencough outbreak in Thunderclan. While Millie, her mother, is getting some fresh air, Briarkit weakly tries to play with her mother, asking her if she can act like a mouse so she could catch her.  She ends in a bout of coughing.
 * There was another time when she is very worried about not being able to find the way to StarClan. Leafpool reassures her that Millie will come get her when it's time.
 * They had to move to the abandoned Twoleg house with the other cats who had caught greencough.
 * When Millie is on the edge of death, she is seen trying to find milk. Honeyfern attempts to make the kit eat a mouse, but Briarkit refuses and wails that she wants her mother.
 * At the end of the book, she is seen with Millie and Firestar and looking healthier.

Sunrise
Briarkit was playing innocently with her siblings and Daisy's kits, a snake stalks her and is about to strike, but Honeyfern pushes her away, taking the bite herself. She sacrifed her life for the kit. Briarkit was very stunned, and it took poppy seeds to calm her nerves.

Members
Mother: Millie : Living (As of Long Shadows)

Father: Graystripe : Living (As of ''Long Shadows')

Siblings:
 * Bumblekit : Living (As of Long Shadows)
 * Blossomkit : Living (As of Long Shadows)

Half-siblings:
 * Feathertail: Deceased (Verified Tribe of Endless Hunting and StarClan member)
 * Stormfur: Living (As of Eclipse)