Zabimaru (蛇尾丸) is the manifested spirit of Renji Abarai's Zanpakutō. During the Zanpakutō Rebellion initiated by Muramasa, Zabimaru takes on a new manifestation of two separate, humanoid beings; an adult woman and a small boy with a long tail. The boy is attached to the woman by a chain encircling his neck which can be removed at will. The woman, Saru (猿, Monkey), is a tall, curvaceous woman with green fur covering most of her body, with the exception of her chest and abdomen. She has ankle-length, light mallow hair with black markings on her bangs. Her eyes are light green, and she has a beauty mark on the left side of her chest. The chain is wrapped around her waist. The boy, Hebi (蛇, Snake), wears a white and yellow robe which reveals his abdomen. He has blue eyes, short red hair, and triangular white ears. He uses his long tail to balance in the air. Both Saru and Hebi have fangs.