Do Bae man

Ambitious and Greedy: Initially, Bae-man views his position as a military prosecutor solely as a means to achieve wealth and social success. He is willing to manipulate evidence or grovel before powerful figures to get what he wants.
Arrogant and Cocky: He possesses an "overweening confidence" and a signature cocky grin. He often acts haughty because he is highly capable and usually one step ahead of everyone else.
Highly Intelligent and Manipulative: Bae-man is a master of reading people and predicting their actions, making him a formidable force in the courtroom. He uses his "boyish charm" to manipulate witnesses and suspects into doing his bidding.
Reckless and Hot-Tempered: He has a history of being unable to follow rules or contain his temper, which led to him being expelled from school multiple times. This impulsiveness sometimes leads to reckless behavior in his investigations.
Resilient and Independent: Actor Ahn Bo-hyun describes the character as someone who does not rely on others or give up easily when facing problems.
Evolving Sense of Justice: Despite his early corruption, he is not entirely without principles. As he recovers lost memories of his childhood trauma, he undergoes a redemption arc, eventually choosing to use his skills to fight systemic military corruption. He displays his action through romantic gestures.