Tom Tanaka is an old friend and senior of Shizuo Heiwajima. He works as a debt collector and later becomes Shizuos employer. Although he often wears a suit, his clothing and hair do not make him appear too formal due to the demands of his job as a debt collector, which requires him to look sharp and business-like but not overly polite or friendly when confronting people. It is likely that Tom works in the underground debt collection industry rather than for a bank. According to the light novels, he works for an online dating website. Tom has a reserved, laid-back personality, and as harsh as one might expect from an underground debt collector. He is usually calm and able to de-escalate situations without angering Shizuo or incurring his wrath.