Bondrewd

Bondrewd is a legendary white whistle delver who has made many great discoveries about the secrets of the Abyss. A researcher fascinated by the Abyss, he has often resorted to illegal and morally questionable means to get funds for and conduct his research, including selling artifacts illicitly, developing dangerous drugs, and even experimenting on living humans. Though how cruel, he still cared for the kids and people he brutally experimented on.

His methods went against all the ethical principles of delvers, but he was allowed to continue due to his outstanding results. Ten years ago, he did the unthinkable by establishing a large base named the Idofront in the deepest area within the 5th Layer of the Abyss, as well as securing a route to the then-inviolable 6th layer.