Sandstorm

Warriors: The Ultimate Guide
"When Rusty the kittypet first joined ThunderClan, Sandpaw sided with fellow apprentice Dustpaw in tormenting him. But the former kittypet, who would eventually come to be known as Firestar, soon made a very different impression on her, as she began to appreciate his courage and loyalty to his adopted Clan. He slowly came to realize how important she was to him as well, and Sandstorm's friendship and support were especially important to Firestar as he prepared for battle against BloodClan. Firestar was determined to save the forest from Scourage and had heard StarClan's prophecy that he was the only one who could do so. But Sandstorm was the cat who made Firestar believe that he was doing the right thing by fighting the cats from Twolegplace and that he would be able to defeat them.

Sandstorm was a proud and committed warrior and her courage equaled Firestar's on the journey to rebuild SkyClan in the sandy gorge far from the forest. Sandstorm took on the role of medicine cat to help the scattered Clanmates, and she matched Firestar blow for blow in the battle against the rats, even though she had only a single life to lose. She was an excellent mother to Squirrelflight and Leafpool, and stood by her daughters when the truth came out about Lionblaze, Hollyleaf, and Jayfeather.

Sandstorm had a quick temper and a strong sense of what was right, which Firestar respected. Next to his deputies and his medicine cats, Sandstorm was the cat he consulted most often before making any decisions for the Clan. She spoke up for the cats in ThunderClan who shied away from the traditional warrior lifestyle, in particular Daisy, who came from the Horseplace by the lake. Sandstorm defended Daisy's wish to stay in the nursery and help other queens, instead of joining border or hunting patrols.

Sandstorm would have loved to have had more kits, but she knew that Firestar had enough demands made on him by the rest of the Clan. She shared his sense of responsibility to all of the cats who lived in the hollow, and never wished that their lives could have been different."

Trivia

 * One of Leafstar's kits, Stormkit, is named after Sandstorm.
 * It is said that Sandstorm cheated on her warrior assessment stealing prey another cat already caught
 * Redtail is Sandstorm's father
 * Sandstorm has SkyClan blood, because her father, Redtail, is Spottedleaf's brother.

Taken from the book Warriors: The Ultimate Guide