Sparrow.

In subsequent series ("Into the Tribes," "Broken Law," and beyond), Sparrow is depicted as a wise, stern, and respected elder healer. His character has become even more prickly, sarcastic, and grumpy over the years. He often scolds young warriors for their stupidity, does not tolerate disobedience, and is always ready to tell his leaders what he thinks of them. However, beneath this rough exterior lies a boundlessly loyal heart, ready to lay down his life for every kin.

Jayfeather, having infiltrated the Dark Forest, learned that the evil cats were preparing for battle. They were tricking the souls of living apprentices into coming to them. They were training living, inexperienced cats to side with the Dark Forest in battle. In the great battle, Jayfeather united the medicine cats of all Clans and helped StarClan defeat the rebellious spirits of the Dark Forest. After the victory, his magical gift faded, as the prophecy had been fulfilled, and he remained an ordinary, yet incredibly skilled, blind medicine cat.

The Omen of the Stars arc and a past life. In this arc, Jayfeather faces a threat from the Dark Forest (the place where evil cats go after death). He must piece together the prophecy, as Hollyleaf has disappeared, and the third person in the prophecy turns out to be the young she-cat Dovewing. Time Travel (Jayfeather): To understand the roots of the prophecy, Jayfeather traveled to the distant past through dreams and meditation. There, he inhabited the body of an ancient cat named Jay's Wing. He helped the Ancient cats migrate from the tunnels to the mountains (where they would later become the Tribe of Falling Water), and then showed them the way to create the forest Clans.

The culmination of the "Power of Three" series was a devastating fire started by the maddened Ashfur. Squirrelflight's Betrayal: Ashfur trapped Squirrelflight and her three grown children (now named Jayfeather, Lionblaze, and Hollyleaf) in a ring of fire, seeking revenge on Squirrelflight for once rejecting him. To save the children, Squirrelflight screamed that they weren't her own and that Ashfur wouldn't hurt her if he killed them. Truth Seeking: A shocked Jayfeather used his gift to interrogate Leafpool and learn the identity of his father. The truth hurt him: his mentor turned out to be his mother. Tragedy at the Gathering: Hollyleaf, driven mad by the violation of the laws, killed Ashfur to prevent him from revealing everything at the Gathering, but ultimately revealed the secret publicly to all the cats before escaping into the underground tunnels. Leafpool was stripped of her medicine cat title, leaving Jayfeather as ThunderClan's only full-fledged medicine cat, bearing the weight of his family's shame.

Jaypaw became Jaypaw and began training as a medicine cat. Soon, he and his brother learned from Firestar of an ancient prophecy: "Three will come, blood of your blood, and the power of the stars will be in their paws." Jaypaw possessed unique magical abilities: Dreamwalking: He could enter the dreams of other cats (both living and dead), see what they were dreaming, and even communicate with them there. Empathy and mindreading: In the waking world, he unerringly sensed lies, hidden motives, fear, or malice in those around him. Dreamsight: When Jaypaw fell asleep or entered the world of StarClan, he saw everything clearly and distinctly, like a sighted cat.

Jaypaw grew up incredibly proud and independent. He deeply hated it when his Clanmates showed him pity or tried to help him. Dream of Battle: He categorically refused to become a medicine cat, believing he was sent there only because of his blindness. He demanded to be trained as a warrior. Training with Brightheart: Leader Firestar accommodated him and assigned him to Brightheart (a she-cat who had lost one eye). Jaypaw took this as an insult, thinking he was being given a "cripple" to match. Despite the difficulties, he learned to navigate the camp and its territory perfectly, using his memory, sounds, and the texture of the earth. Realization of Destiny: During an accidental fall into a ravine in the Mines, Jaypaw nearly died. This incident, along with omens from StarClan and visits from the ancient ghost cat, Cliff, forced him to recognize that his true strength lay beyond physical combat. He voluntarily became Leafpool's apprentice.

Jayfeather (originally Jaypaw) was born with his brother, Lionblaze (Lionkit), and sister, Hollyleaf (Hollykit). The Great Deception: For a long time, the kits believed Squirrelflight and Brambleclaw were their parents. In reality, their mother was Leafpool, a ThunderClan medicine cat, and their father was Crowfeather, a WindClan warrior. This union violated two laws: the warrior code (love between Clans) and the Medicine Cat Colex (the prohibition of children and mating). To save her sister from shame, Squirrelflight took the kits in and passed them off as her own. Blindness: Jayfeather was born completely blind. His eyes were the color of a jay's wing (hence his English name, Jaykit), but he had never seen the physical world. Because of this, he developed heightened hearing, a keen sense of smell, and an incredible sensitivity to the emotions of others from childhood.