Bonolenov is known as member number 13 of the Genei Ryoudan. Despite wearing rags and resembling a mummy, he played an insignificant role during the York Shin arc. However, during the Chimera Ant arc, he fought alongside the rest of the Genei Ryoudan against the Chimera ants. Although little is known about his personality or reasons for joining the Ryoudan, Bonolenov displayed a mocking and confident attitude during the fight with the Chimera ants.
Bonolenov hails from the Gyudondondo tribe, which is one of the tribes that did not originate from Ryuuseigai. The people of this tribe are referred to as "dancing warriors" due to the different sounds created depending on the number and size of needles inserted into their bodies when they are three years old. These needles are gradually replaced with bigger ones until holes in the skin are formed. Bonolenov covers his body with bandages, which conceal numerous holes throughout his skin.
Bonolenov possesses a Nen ability that is not well-understood, but he was seen using it during the fight against the Chimera ants.
Battle Cantabile: he plays music through the holes on his skin during battle, with different songs creating different nen effects, such as transformation of his own body or the materialization of objects.Only two of his Battle Cantabile abilities have been revealed: The Prologue and Jupiter. The Prologue allows him to conjure warrior gear onto his body, along with a spear. Jupiter allows him to conjure a giant sphere (with the appearance of the planet of Jupiter) and crush his enemies.