In full Bijuu form, Isobu displays a timid and reserved nature. The beast refers to itself as «boku,» which indicates modesty. Isobu is not aggressive without need and gets along with jinchuriki. Yagura, being a perfect host, maintains complete control over the beast. Their interaction is coordinated, without internal conflicts, and they act as one. In battle, Yagura directs Isobu's power cold-bloodedly and calculatingly, using brute force for ramming.