Agent Byun, the oldest of the two, acts very cute and childish. His baby-like behaviors make it difficult for him to concentrate on serious assignments. Although his attention span is just as short as his partner, when he is focused, he proves to be the smartest. When he puts his mind to it, his plans and solutions are genius.

Although being younger, Agent Park has a very deep voice which he often usres to his advantage to interrogate (or pick up women). He is also a laughing machine and usually gives away his hiding position, even when nothing is funny. He is also more optimistic than his partner, never failing to bring him out of discouragement.