Bak Chang

Bak is the leader of the Black Order's Asia Branch, a post occupied also by his great-grandfather (and perhaps the other generations of his family). He and Komui seem to be good friend as Komui address him as Bak-Chan (Dear Bak). Due to Komui's sister complex, Bak doesn't let him (or anyone else) know about his secret stalkerish crush on Lenalee, and this fact was used by Allen to threaten him so he would open the door where Fou was fighting with an Level 3 Akuma.

Like Komui, he is a man completely aware of his duties and will follow God's will strictly. Even not being a Conformer, he is able to do some spells controlling the structure of the headquarters thanks to the seal of his great-grandfather and the blood of Chan's clan. Acting as the member of the branch, he is a responsible leader. It's said his intellect is a triumph of the Asia Branch. Because he was raised like a prince, Bak refers to himself as Ore-sama (something like "my honorable self", "divine me", or "the great me" in English) when he is angry (more specifically, angry at Fou), but otherwise he usually calls himself boku (A less formal way for males to refer to himself); Fou refers to him as Baka-Bak (Idiot-Bak). If he gets very agitated, numerous hives appear on his skin (especially if someone refers to his secret obsession with Lenalee). His hives also appeared when he was forced to lock Fou into a room to fight a Level 3 Akuma, and he even cried without his own knowing, proving that he cares greatly for her. Bak eventually opened the door, allowing Allen to enter. After seeing Fou is seriously injured, he went to her and trying to protect her.

Bak is later seen exploring the captured ark, and he then attends a meeting with other important members of the Black Order. He shows utter disbelief at Malcom C. Rouvelier's comments regarding Allen as a possible traitor. Later, after Lulu Bell and the akuma began to attack the research center, he managed to avoid capture, and he has helped Allen in the fight by using Finder's equipment to entrap Akuma.

He was seriously injured during the struggle to protect Headquarters from the Level 4 Akuma, but survived with most of the victims of the Science Department and assisted the Black Order as they were moving to the new Headquarters.

Trivia

 * Bak has a crush on Lenalee and owns photo collection of her
 * after accident with Komuvitan D Bak was the one who made a vaccine