The Swag-filled Gangster is a cute rebel who enjoys lighthearted pranks while roaming the city's alleyways. True to his name, a portmanteau of "gang" and "hamster," he possesses a rebellious personality combined with a small, cute appearance. His attire is unique; he looks like a golden hamster wearing a black mask.

Gangster enjoys lighthearted pranks, such as sneakily snatching snacks at the supermarket or stealing people's wallets in the park. However, his actions are not malicious; they are simply for the fun and thrill. Watching him sprint through the alleyways wearing a black mask is as cute and comical as a golden hamster wandering through a maze.

He has a rebellious side, but deep down, he is warm and kind. Gangster lives freely without being bound by rules, but he is a character who receives all the love from those around him for his lovable and cute charm.