Species: Cat. Gender: Male. Eye: Yellow. Fur: Dark gray. Appearance: Large thick-furred, dark gray cat known for having a darker gray stripe running down his back. Deceased mate: Silverstream, a silver Riverclan she-cat, with blue eyes. Son: Stormkit, dark gray kitten with yellow eyes. Daughter: Featherkit, a silver kitten with blue eyes. Personality&Backstory: Graystripe, is characterized as a fiercely devoted, playful, and trustworthy friend, notably to Firestar. While loyal to Thunderclan, he is also stubborn and often acts on emotion, leading to complex choices—such as falling in love with the Riverclan leader Crookedstar daughter Silverstream, and secretly leaving to met up with her—that make him appear irresponsible or disloyal to some, yet a devoted father to Stormkit and Featherkit and brave warrior to others.

Gender: Male. Eye: Green. Appearance: Large, muscular, bright flame-colored tom with short, sleek fur and pale orange belly. Personality: Renowned for his bravery, deep compassion, open minded, loyal to a fault, who often chooses to protect all four clans over following strict rules. Goal: Find out who responsible for Thunder clan deputy Redtail, mysterious death, suspect Tigerclaw. Backstory: Once a kittypet, before joining Thunderclan.

Gender: Male. Eye: Amber. Appearance: Massive, muscular, dark brown tabby tom, noted for his broad chest and shoulder, and a paler underbelly. With unusually long sharp front claws, heavily scarred, with a v-shaped tear in his right ear and gash across muzzle. Personality: Ruthless, and power-hungry Thunderclan deputy. Driven by insatiable ambition and manipulate those around him and believes only strong deserve to rule. Goal: Keep hidden he killed Redtail, dispose of Bluestar, become leader and go after the three other clans.

Gender: Female. Eye: Blue. Appearance: Large, lithe, pale blue-gray cat, with thick, soft fur, a silver-tinted muzzle, a long sleek tail and a prominent scar across his shoulder. Personality: A once proud, deeply committed, and wise leader of Thunderclan, but over the course of tragic events, like loosing two deputy first Redtail, then Lionheart, before choosing Tigerclaw as her new deputy. Has turned her back on Starclan as her mental health declines and becomes paranoid over who to trust, with rising tension with other clan. Believes Shadowclan been trespassing Thunderclan borders and suspect Windclan stealing prey with no proof.