Rainwhisker

Rainwhisker is a handsome dark gray tom with blue eyes.

Rising Storm

 * Rainkit, along with his siblings Sootkit and Sorrelkit, is born to Willowpelt and Whitestorm, although none of their names are mentioned. Willowpelt loves her kits, but she says she also wants to get back to warrior duties quickly.

A Dangerous Path

 * Rainkit and his littermates are seen very little in this book, although they now share the nursery with Goldenflower's kits, Bramblekit and Tawnykit.

The Darkest Hour

 * His sister Sorrelkit is fed deathberries by Darkstripe in order to keep her quiet after she sees the senior warrior talking to Blackfoot, the ShadowClan deputy, on ThunderClan territory. He is also one of the kits whom Sandstorm teaches in order to defend the camp against a possible attack from BloodClan, They all say they want Sandstorm as a mentor once they become apprentices, but Firestar decides Sandstorm can mentor Sorrelkit. His father Whitestorm is killed in the battle against BloodClan by the BloodClan deputy, Bone.

Firestar's Quest

 * He is Cloudtail's first apprentice, now called Rainpaw. His mother, Willowpelt, is killed by a badger at Snakerocks while saving his brother Sootpaw, and he and his siblings are given several days off of apprentice duties to help them cope with the loss of their mother.

Midnight

 * Rainpaw is a young warrior of ThunderClan, now named Rainwhisker. His brother Sootfur is as well, but Sorrelpaw was made a warrior three moons later than them because she had been injured by a monster, causing her to miss some training. Rainwhisker and Sootfur cheered enthusiastically when their sister finally got her warrior name.

Moonrise

 * He continues to serve ThunderClan while the forest is being destroyed.

Dawn

 * As the Clans begin the Great Journey, Rainwhisker becomes good friends with Swallowtail of RiverClan. He saves Birchkit when the Twolegs are destroying the forest.
 * Also, Rainwhisker, along with several other cats, help rescue Leafpaw, Cloudtail, Brightheart, Mistyfoot, Gorsetail, Sasha, Cody, and the other cats abducted by Twolegs.

Starlight

 * Rainwhisker acts as any warrior would, helping his Clan to settle in to their new home by the lake. At the first Gathering, he runs forward to greet his friend Swallowtail from RiverClan. Even as he bends to lick her ears, he stops himself, realizing that they cannot be so friendly now that the Clans are separated once more.

Twilight

 * Rainwhisker fights in the battle against the badgers, alongside his Clanmates. One of the badgers knocks him unconscious and dislocates his shoulder, but does not kill him.

Sunset

 * After the battle he is found and wakes up, only to hear that his brother Sootfur had been killed in the battle. He then takes on the sad task of telling Sorreltail about it, right after her kits have been born. Even though he is wounded, he wants to help bury his brother with the elders. Mousefur sees nothing wrong with it and lets him help.

The Sight

 * It is revealed that he had been killed by a falling tree branch during a storm sometime during the six moons between Sunset and The Sight.

Members
Father:
 * Whitestorm : Deceased, Verified StarClan member

Mother:
 * Willowpelt : Deceased, Suspected StarClan member

Brother:
 * Sootfur : Deceased, Suspected StarClan member

Sister:
 * Sorreltail : Living (As of The Fourth Apprentice)

Half-Brother:
 * Graystripe: Living (As of The Fourth Apprentice)

Grandmothers:
 * Snowfur : Deceased, Verified StarClan member
 * Swiftbreeze: Deceased, Verified StarClan member

Grandfathers:
 * Thistleclaw: Deceased, Suspected StarClan member
 * Adderfang: Deceased, Suspected StarClan member

Great-Grandmothers:
 * Moonflower : Deceased, Verified StarClan member
 * Poppydawn: Deceased, Suspected StarClan member

Great-Grandfather:
 * Windflight: Deceased, Suspected StarClan member

Uncles:
 * Patchpelt: Deceased, Suspected StarClan member
 * Redtail: Deceased, Verified StarClan member

Aunts:
 * Leopardfoot: Deceased, Suspected StarClan member
 * Spottedleaf: Deceased, Verified StarClan member

Great Aunts:
 * Bluestar : Deceased, Verified StarClan member
 * Rosetail: Deceased, Suspected StarClan member
 * Sweetpaw: Deceased, Verified StarClan member

Cousins:
 * Mistyfoot : Living (As of The Fourth Apprentice)
 * Stonefur : Deceased, Suspected StarClan member
 * Mosskit : Deceased, Verified StarClan member
 * Nightkit: Deceased, Suspected StarClan member
 * Mistkit: Deceased, Suspected StarClan member
 * Tigerstar: Deceased, Verified Place of No Stars member
 * Sandstorm: Living (As of The Fourth Apprentice)
 * Brambleclaw: Living (As of The Fourth Apprentice)
 * Tawnypelt: Living (As of The Fourth Apprentice)
 * Hawkfrost: Deceased, Verified Place of No Stars member
 * Mothwing: Living (As of The Fourth Apprentice)
 * Tadpole: Deceased, Residence Unknown
 * Leafpool: Living (As of The Fourth Apprentice)
 * Squirrelflight: Living (As of The Fourth Apprentice)
 * Reedwhisker: Living (As of The Fourth Apprentice)
 * Three Unidentified Kits of Mistyfoot's: Status Unknown
 * Tigerheart: Living (As of The Fourth Apprentice)
 * Flametail: Living (As of The Fourth Apprentice)
 * Dawnpelt: Living (As of The Fourth Apprentice)
 * Lionblaze: Living (As of The Fourth Apprentice)
 * Jayfeather: Living (As of The Fourth Apprentice)
 * Hollyleaf: Status Unknown

Nieces:
 * Honeyfern : Deceased, Verified StarClan member
 * Poppyfrost : Living (As of The Fourth Apprentice)
 * Cinderheart : Living (As of The Fourth Apprentice)
 * Feathertail: Deceased, verified StarClan and Tribe of Endless Hunting member
 * Blossompaw: Living (As of The Fourth Apprentice)
 * Briarpaw: Living (As of The Fourth Apprentice)

Nephews:
 * Molepaw : Deceased, Suspected StarClan member
 * Stormfur: Living (As of Eclipse)
 * Bumblepaw: Living (As of The Fourth Apprentice)

Grand-Niece:
 * Unnamed She-kit: Living (As of The Fourth Apprentice)

Grand-Nephew:
 * Unnamed Tom-kit: Living (As of The Fourth Apprentice)