Redtail/Main article

Redtail is a small, dark, dappled tortoiseshell tom. He has a distinctive, bushy ginger tail as red as fox fur, and feathered ears.

He is born as Redkit to Adderfang and Swiftbreeze, and his littermates are Spottedkit and Willowkit. He has two older siblings, Leopardfoot and Patchpelt. When apprenticed, Redpaw is given Sparrowpelt as his mentor. Upon completing his training, he is given his warrior name, '''Redtail. '''After the death of ThunderClan's leader, Sunstar, he is made deputy under Bluestar. He and the new leader share a close friendship, providing a strong foundation for their Clan. He fathers a daughter with Brindleface, Sandpaw. Redtail is noted for being much more quick and clever than the majority of ThunderClan's warriors.

During an attack on the Sunningrocks, Redtail's patrol is overwhelmed and, knowing they cannot win, he orders a retreat. A second battle takes place, and during the battle, Redtail is said to have been killed by RiverClan's deputy, Oakheart. Tigerclaw states he avenged Redtail's death through striking down the RiverClan deputy. However, Oakheart was actually killed by a rockfall disturbed by his struggle with Redtail. Redtail was revealed to be murdered by Tigerclaw, with hopes of becoming deputy in his place. Ravenpaw was a witness to the murder and tells Firepaw.

Redtail appears in StarClan, giving Firestar his second life, the life of justice, and thanks Fireheart for revealing Tigerclaw's treachery and giving him peace.

Redtail partakes in the Great Battle, and helps the Clans fight back the Place of No Stars, reuniting with his friends from when he was alive. He witnesses Firestar's death, and helps bring him to StarClan.