Age: 66 moons ( 5.5 years )
Pelt: Whitestorm is a big, thick-furred, long-bodied, muscular snowy-white tom with yellow eyes, massive paws, tufted ears with a scar behind one of them.
Sons: Sootfur, Rainwhisker
Bluefur watches him and Tigerkit giving Brindlekit and Frostkit, who were born a half-moon after Whitekit, a tour of the camp. Bluefur remarks that she wants Whitekit to stay young for a long time and to chase nothing fiercer than a moss-ball.
While Whitekit enjoys himself as a kit, Snowfur misses her independence and freedom as a warrior. As a result, one day, Bluefur takes Snowfur out of the camp so she can stretch her legs and be in the forest again. Snowfur gets killed by a Twolegmonster while chasing off a ShadowClan patrol. A ThunderClan patrol consisting of Adderfang, White-eye, Thrushpelt, Dappletail, and Windflight find Bluefur over Snowfur's body. Adderfang tells Bluefur that he'd tell Thistleclaw, Stormtail, and Sunstar about Snowfur's death, but Bluefur must tell Whitekit herself.
At first, when Bluefur goes to tell Whitekit about his mother's death, he believes that Snowfur does not like him anymore, and that was why she wouldn't be coming home. Bluefur explains that Snowfur loves him, and she will watch him from StarClan. Whitekit asks if he can visit her, forcing Bluefur to finally say that Snowfur is dead. Robinwing offers to share her milk and nest, but Whitekit wails that he only wants Snowfur. He curls next to his mother's body and vows to live outside with her. He won't accept Robinwing's milk or her nest.
A half-moon later, Bluefur is still deeply depressed by her sister's death. Whitekit has allowed Robinwing to take care of him, and Bluefur continues to put distance between him and herself. Tawnyspots tells Bluefur that he will no longer spare her from patrols and hunting parties, and points out that neither Thistleclaw nor Whitekit have let grief take over them. After a terrifying dream in which both Snowfur and Whitekit drown, Bluefur vows to spend more time with him, due to the dream and her desire to remove Whitekit from Thistleclaw's dangerous influence.
Bluefur is jealous when Thistleclaw receives an apprentice, Tigerpaw, before her, but Whitekit tells her he was glad, because that meant he could be her apprentice. Bluefur takes Thistleclaw's duties as a mentor, limiting his time to be with his son, as an opportunity to have more of an influence over Whitekit.
Bluefur hopes to become Whitekit's mentor, and when it is about time for Whitekit to be apprenticed, Bluefur requests that Sunstar grant her Whitekit as her apprentice; Sunstar gently declines because Bluefur basically mothered Whitekit after Snowfur's death, and she would be too soft with him, consequently.
Sunstar gives Whitekit Patchpelt as a mentor, a choice that Bluefur approves of. Once he has completed his training, he becomes a warrior, Whitestorm. Bluefur is very proud of him, especially because he has not caved to his father's darkness.
Even after Bluefur becomes a queen, loses her kits, and then becomes deputy, she remains close to Whitestorm. He cheers loudly for her when she becomes deputy, second loudest only to Thistleclaw, who seems to yowl to StarClan themselves in outrage that he was passed over for deputy and to convince the Clanthat she had his full support. She even remains close to him after she becomes leader.
One day, Bluestar and Whitestorm walk along the Twoleg border, recalling memories of his kithood. She stops him, however, when she sees a ginger kittypet who nearly catches a blackbird. She is in awe when she sees his fiery pelt, and he wonders if he'll be a threat to their prey. Bluestar says nothing and the two go back to camp.
In the manga, he returns to camp with Lionheart and the ginger kittypet, Rusty. He explains to Bluestar that he seems strong for a kittypet and Rusty proves it by attacking Longtail when he taunts him about his collar.