Frostfur is a pure white she-cat with dark blue eyes and sleek, soft fur.
- Frostkit and Brindlekit are born to Robinwing and Fuzzypelt.
- When Tigerkit and Whitekit show Frostkit and Brindlekit the camp they wander near the medicine den.
- They wake up Goosefeather who starts yowling at Tigerkit, calling him a monster.
- The kits are frightened and Bluefur comes over to calm them down.
- Frostkit asks Bluefur if they had done something wrong, and Bluefur says that Goosefeather had just been having nightmares, and they had only startled them.
- Frostkit is apprenticed to Bluefur and becomes Frostpaw.
- Frostfur retires sometime between The Darkest Hour and Firestar's Quest.
- In Midnight she tells Squirrelpaw a story of when Firestar was younger and always getting into trouble.
- Frostfur develops a cough that worries her clanmates in Moonrise.
- In Dawn when ThunderClan returns from helping ShadowClan she demands to know what happened.
- She is shocked to find out that the ShadowClan camp has been destroyed.
- Leafpaw tries to give Frostfur herbs but she refuses them.
- Frostfur elects to stay behind when the Clans leave and stays with Speckletail and two RiverClan elders, Loudbelly and Shadepelt.
- She believes she would be a hindrance to the traveling Clans if she stayed with them.
- Leafpaw tells her good-bye before the Clans leave.
- When Mudfur dies the cats staying behind sit vigil for him.
- Vicky confirmed that the Speckletail, Loudbelly, Shadepelt, and Frostfur all died of starvation a few moons after the Clans left.
- Frostfur goes to StarClan.
- In The Last Hope when Jayfeather reunites StarClan Frostfur is seen batting at leaves with her paws.
- Her mother is Robinwing
- Her father is Fuzzypelt
- Her sister is Brindleface
- Her brothers are Dustpelt and Ravenpaw
- Her half-brother is Longtail
- Her mate is unknown
- Her daughters are Brightheart and Cinderpelt
- Her sons are Thornclaw and Brackenfur
- Frostfur dies of starvation a few moons after the Clans leave the forest in Dawn.
- She dies with Shadepelt and Loudbelly of RiverClan, and her clanmate Speckletail of ThunderClan.
- Her mate will never be confirmed, as her family was created before Vicky had decided how all the cats were related.
- She is around 88 moons, or 7.3 years.