Jack Trevor

The legendary card mechanic of Calvard, the protagonist of the card mechanic Jack.

Jack is a regular at Lamport's Western-style bars and a well-known gambler in the industry. Although he himself said that his own business is a gambler, he also runs the business of intelligence dealers as a side business, and thus got to know Fan En.

He and Dinge are also old acquaintances, and after Dinge's death, he came to the capital to collect information about "Amata".