Agent Cha has only been bad news for Hoon from the start. He was first introduced as the man that led the team to escort Park Cheol to North Korea. He also escorted Hoon into the surgery room and threatened Park Cheol. Soon after he led another team to gather Hoon and his father and take them back to North Korea. He kept an eye on Hoon while he grew up in North Korea and raised him in a way. He always kept Hoon in his place and was a symbol of fear for Hoon.
Cha made sure Hoon kept up his daily duties. Hoon managed to escape Cha, but the Agent only followed Hoon. He led the whole chase for Hoon through Budapest and had Hoon cornered. He was willing to shoot Hoon and Jae-Hee on several accounts. His main goal was to capture Hoon. After time passed, he is now part of a larger conspiracy and has a specific plan to abide to. He also lost one of his fingers as punishment for losing Hoon the first time. Cha is very focused on his tasks and now seeks revenge from Hoon for the loss of his finger.
Cha made sure Hoon kept up his daily duties. Hoon managed to escape Cha, but the Agent only followed Hoon. He led the whole chase for Hoon through Budapest and had Hoon cornered. He was willing to shoot Hoon and Jae-Hee on several accounts. His main goal was to capture Hoon. After time passed, he is now part of a larger conspiracy and has a specific plan to abide to. He also lost one of his fingers as punishment for losing Hoon the first time. Cha is very focused on his tasks and now seeks revenge from Hoon for the loss of his finger.