Turtle Tail/Main article

Turtle Tail is a lithe, sleek-furred, predominantly white tortoiseshell she-cat with green eyes and a stumpy tail.

Turtle Tail is a young member of the Ancient Tribe. She leaves the Tribe, along with Clear Sky, Shaded Moss, Rainswept Flower, Tall Shadow, Falling Feather, Jackdaw's Cry, Bright Stream, Hawk Swoop, Moon Shadow, and Quick Water to find the new home Stoneteller saw in her vision. Gray Wing stays behind, but later joins them after Jagged Peak runs off to find the group, and Turtle Tail is happy to have him with them and shows affection for the tom during the journey.

Upon reaching their new territories and making a camp on a moor, Gray Wing and Turtle Tail meet Bumble, whom Turtle Tail befriends, often visiting her in Twolegplace. When Gray Wing grows feelings for a rogue named Storm and tells Turtle Tail, she appears hurt and distrusting. This eventually drives her to leave to live with Bumble as a kittypet. Storm becomes mates with Clear Sky, but leaves him, disapproving of his leadership and goes to live in an abandoned Twoleg den with her kits. Turtle Tail rushes to Gray Wing for help, explaining Storm's den is under attack. Storm and two of her kits die, but one survives, which Turtle Tail names Thunder.

Moons later, Turtle Tail visits the moor and tells Gray Wing about Tom, a new kittypet who joined her and Bumble. Gray Wing realizes she's expecting kits and she reveals they're Tom's, but he shows no interest in making plans for them, and the Twolegs will take them once they no longer need her. Not wanting that life, Turtle Tail leaves the life of a kittypet and rejoins the moor cats. She soon gives birth to three healthy kits, Sparrow Fur, Pebble Heart, and Owl Eyes.

Later, Bumble comes to the moor, covered in cuts from Tom and blames Turtle Tail for it, which hurts her. After the fire, she comforts Gray Wing and spend much of their time together, soon becoming mates. She is furious with worry at Gray Wing for not taking care of himself after he collapses from his bad breathing multiple times and urges him to take time to recover. She joins a group to go and confront Clear Sky when they find Bumble dying. Turtle Tail blames Clear Sky for her death, but Clear Sky defends himself, saying a fox got her.

Tom wants to meet with Turtle Tail and urges her to come back and he wishes to meet his kits. She agrees, thinking it would be better than him finding where she lives. Turtle Tail refused to return with Tom and even attacks him during the meeting. Later, she helps Wind Runner with her kitting, and afterwards realizes her own kits are missing and goes out in search for them, fearing Tom has taken them. Lightning Tail and Thunder go after her, but discover her body on the Thunderpath. Unable to bury her, they push her beneath a flowery bush and go on to find her kits.

After the Great Battle, Turtle Tail appears with the spirit cats and delivers the message to unite or die, then bids farewell to Gray Wing. She appears multiple times with the spirit cats afterwords, guiding the Early Settlers along their paths to becoming Clans.