Brook

Niko Tokita

十鬼蛇 二虎
This Tokita Niko referred to as The Other Tokita Niko (もう一人の 十鬼蛇 二虎, Mōhitori no Tokita Niko) to differentiate from the Niko who trained Tokita Ohma, is a power-hungry martial artist who abandoned his master and has ties with the Worm. (Source: Kenganverse Wiki)