Usogui
A gambler by the name of Madarame Baku, his identity is shrouded in mystery. Usogui is his nick name (literally The Lie Eater). Club Kakerou is the premier underground gambling den, and its patrons are fierce competitors. Madarame Baku, who can see through people's falsehoods, participates in a number of high-stakes games at Club Kakerou.