Thomas is creative, soft-spoken, timid, and taciturn. Under the influence of James Coleman, his personality changed drastically, becoming arrogant and pompous. However, after severing ties with James, he reverted to his original, more timid demeanor. Later in life, Thomas is guilt ridden over his past crimes and appears to live a sad and bleak existence, trying to atone for his mistakes.

Before becoming James Coleman’s right-hand man, Thomas was a struggling artist who met Cynthia Moore at a coffee shop. The two began a relationship and planned to get married. This changed when Thomas met James, who recognized his artistic talent and convinced him to become a forger. Under James’s influence, Thomas grew arrogant and pretentious, leading to his breakup with Cynthia and eventually prompting him to sever ties with James.

Following this, Thomas discovered one of his forgeries being copied by a boy in a museum. Overwhelmed with guilt, he spent all the money he had earned to buy back the counterfeit paintings he had created. After cutting ties with James, he faced a £2 million debt crisis and resolved never to paint again.