Soku (側, Soukuo) or otherwise known as Scrubber Soku (側水仕事, Fukisouji no Soku?), is currently a marine captain that is working under Baba Yaga’s command and originally was a member of the Baba Yaga Pirates. He was considered an officer among the armada and was feared because of it. Little is still known about Soku know body knows where he came from, who he really is or anything. Originally as stated by Baba Yaga is that Soku was a master thief and after stealing from his victims, he would “scrub” their brains so as to not to remember what had happened to said person. Soku had broken into countless homes and stole everything from money to even clothing.