In full transformation, Juugo completely loses control over himself and turns into a merciless killer. His mind is overwhelmed by an uncontrollable thirst for destruction, and he stops distinguishing between allies and enemies. In this state, he is driven solely by instincts, not by rational decisions. His voice changes, becoming low and distorted. Unlike the partial transformation, where he retains the ability to think and follow orders, here he attacks everything he sees, without regard for the consequences. This form is a direct consequence of his clan's ability to absorb natural energy: when there is too much of it, his body involuntarily restructures into combat mode, and his mind shuts down. The only way to stop him in this state before was through Kimimaro's will, and later — Sasuke, who with his killing intent or Sharingan could suppress the episode. Without an external restraining factor, Juugo in full transformation poses a threat to any living creature nearby.