Hawkfrost is a dark brown tabby tom with a snow-white underbelly and ice-blue eyes. Hawkfrost was a RiverClan warrior under Leopardstar's leadership in the forest and lake territories and was a member in the Dark Forest. Hawk was born a rogue to Sasha and Tigerstar alongside his littermates, Tadpole and Moth. After Tadpole's death, Sasha took her kits to RiverClan, where he was renamed Hawkkit, and later became an apprentice as Hawkpaw, being mentored by Leopardstar. After becoming a warrior, Hawkfrost was made deputy temporarily, but was demoted back to a warrior after Mistyfoot returned. Following the arrival at the lake, he urged Mudclaw in his rebellion and grew close to his half-brother, Brambleclaw. Hawkfrost and Brambleclaw trained in the Dark Forest by their father, and once Brambleclaw became ThunderClan's deputy, Hawkfrost lured Firestar into a fox trap for Brambleclaw to kill; however, his half-brother impaled Hawkfrost with the fox trap, mortally injuring him; he subsequently descended to the Dark Forest. Hawkfrost trained Ivypool, having such faith in her, until she sided with the Clans in the Great Battle, and in the wake of Ivypool's betrayal, he killed Hollyleaf. Eventually, Hawkfrost faced Mothwing and killed Dapplenose, and after confronting Brambleclaw, his half-brother killed him a second time, making him vanish forever.