The Demon King whom the Demon Slayer Corps must defeat. Cold and arrogant, he stops at nothing to achieve his goals. He uses the entire Infinity Castle to corner the Demon Slayers.

A Demon Slayer who uses Water Breathing and Hinokami Kagura. He has a warm and upright personality, but he fights to the end to protect his friends and family. He advances toward Muzan in the Infinity Castle.

The Serpent Hashira who uses Serpent Breathing. Strict and cold, but deeply cares for his comrades. He especially worries about Mitsuri and tries to stay by her side during battle.

The Stone Hashira who uses Stone Breathing. The center of the Hashira, possessing powerful physical abilities and excellent combat sense. He leads his comrades with a calm and benevolent personality.

The Wind Hashira who uses Wind Breathing. He has a rough and aggressive personality, but his desire to protect his comrades is strong. He pushes the enemy back more aggressively than anyone else in the Infinity Castle.

The Mist Hashira who uses Mist Breathing. Despite his young age, he possesses outstanding swordsmanship. Usually indifferent and sharp-tongued, he risks his life to fight for his comrades.

The Water Hashira who uses Water Breathing. Reticent and cold, but helps his comrades through his actions. He stands against Muzan alongside Tanjiro, continuing the battle calmly.

The Insect Hashira who uses Insect Breathing. Usually wears a gentle smile but is cold-blooded toward enemies. She specializes in combat using poison and rapid movements.

The Love Hashira who uses Love Breathing. Bright, warm, and expressive with her emotions. She fights enemies in the Infinity Castle using her unique flexibility and powerful strength.