Baryon Mode is a unique transformation accessible to Kurama with its jinchūriki.

In this state, Naruto’s hair becomes spikier, standing up on its ends with tufts on each side of his head appearing as fox ears. His whisker markings become thicker, with the upper ones on each side curving up below his eyes. The pigments around his eyes become black and stretch up towards his makeshift fox ears, and he takes on Kurama’s red-slit eyes. The colouring of his clothes turns slightly darker orange, and he gains a chakra cape with a black swirl in the middle of his chest. Flowing from the back of his cape are four orange (red in the anime) chakra tails, with five more at the end of the cape; each tail has a black line down the centre that connects in the middle of the cape as a swirl.

In a process similar to nuclear fusion, Naruto’s and Kurama’s chakra are consumed as raw materials to produce a new type of energy. The increase in chakra was enough to shock both Isshiki and Sasuke, with the latter noting it being tremendous. When in use, it dramatically boosts Naruto’s reflexes, speed, and power to such extremes that he even surpasses Isshiki’s capabilities, allowing him to snatch the Ōtsutsuki’s black rods out of the air before they are visibly enlarged, as well as dodge and effortlessly parry attacks. Kurama notes that because all chakra is connected, contact with an opponent will drain their lifespan as well.