Appearance is that of a multifaceted metal head with circular red eyes from various sides. He wears the Reverberation Ensemble's uniform, however he uniquely wears an overcoat version. Jae-heon is sadistic and thinks little of others' lives other than entertainment or means to an end. This is a sentiment that that is more intense towards the wealthy, despising them for their ignorance towards the lives of the people in the Backstreets Fights via using puppets and strings.