Roudy

Chronology
He and his group try to rob the Accessory Merchant and Naofumi's group only to be stripped of everything they had and their base is scavenged. c36

He and his group accidentally run into Naofumi's group again and before they realize who it is they make known their intention is to rob them. Because he was ransacked last time he had to merge with another bandit group and become a lackey. He gave the order to attack with a shaky voice and he with the newer members of the bandits who didn't know of what happened last time attempted to rob Naofumi's group anyway but once again they are subdued and stripped of everything they had and their base is scavenged. c60

He and his group try to rob Ren but Ren is able to overpower them but Roudy escapes. He tries to collect the bounty on their heads, however when he goes to turn them in the remaining thieves claim that they are normal adventurers and Ren attacked them. They almost get away while Ren is being apprehended, but unfortunately for them Naofumi happened to be in the same town at the time with Firo and a few others and tells Firo “Enjoy your meal” implying he'll allow her to eat them. The leader of the small group quickly confesses and explains where their hideout is located on a map. c152

Heroes
Iwatani Naofumi Amaki Ren

Other
Firo