Rudo "Trash Vandal"

Rudo is a former Sphereite and Regto's adopted son whose false convictions led to him being sentenced to The Pit. After being saved from a group of trash beasts, he joins the Cleaners as part of a plan to enact murderous vengeance on his accusers. His vital instrument consists of 3R, a pair of gloves from the Watchman series, which were given to him by Regto before his death.

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His full name is Rudo Surebrec.

(Source: Gachiakuta Wiki)