Donatello  

, ドナテロ

During Kaburagi's time as a warrior, he had a colleague named Donatello who worked as a Balancer. However, when Kaburagi acted on his own, it led to Donatello being fired from his position and sent to the Bug Correction Facility. Donatello was a barbaric man who took pride in his physical strength, and he maintained control over the cyborgs in the facility through force.