Bondrewd

Bondrewd is a shorter man sporting mostly black clothing, with a long coat and a suit.[2] He always covers his face with a black helmet which includes a gap in the middle where violet light shines through. His second body also has a lizard-like tail, which originates from the Artifact Third Works.[3]

His White Whistle is sculpted into the shape of two hands clasped together and is activated by rubbing instead of blowing into it, as it would be impractical to use while wearing his mask.[3][4]

Bondrewd is a man who values knowledge above else, even in the wake of whatever moral issues that may occur from his actions. He is willing to sacrifice anyone and everyone in the pursuit of it, not out of malice but because he feels it is necessary to prepare for the end of the 2,000-year cycle.[5][6] He remembers the names of each of the individuals he has sacrificed.[7]

He doesn't show hostility to those he faces. Rather, he praises them if they manage to best him.[8]

At some point in the past, Bondrewd was responsible for some unclear criminal offense in a foreign country and a bounty was placed on his head. Regardless, he became a Delver and engaged in any activities that could fund his research into The Abyss: selling drugs that resulted from human experiments, illegally selling Artifacts, and supplying secrets. Some bounty hunters would show up to claim his head, but each would disappear. Eventually, no one would approach him, out of fear.[10]

At some point within the past fifteen years, he obtained a Special Grade Artifact, Zoaholic, and used it to spread his consciousness to multiple bodies, creating the Umbra Hands.[11] Ten years ago, he was able to establish a forward operating base within the ruins of the 5th Layer, Ido Front.[10] When he became a White Whistle Delver, he used his original body as the material to create his Life-reverberating Stone, his white whistle, effectively becoming his own whistle.[12]

In order to sustain his energy by combating The Curse of the Abyss, Bondrewd creates specialized packages made from humans who are the easiest to transport and won't be missed. For portability, only the brain and enough "guts" to last a few days are used. The Curse is deflected away from Bondrewd and onto the person in the cartridge instead. A cocktail of drugs is also used to induce a state of ecstasy and fear in the cartridge to boost the Curse-combating efficiency. Bondrewd is able to avoid the loss of humanity from ascending in the 6th Layer6th Layer.[38] As Bondrewd demonstrated, individuals in cartridges are still able to bestow the Blessing.[7]

Bondrewd literally used his own soul and body to form his white whistle, he is not human at this point.

Bondrewd's umbral hands are actually his workers, he calls them that just as an nickname. And Bondrewd's Favorite Umbral hand is Gueira.

Bondrewd lives in the sixth layer of the abys, The Abyss is a massive pit with around 1000 meters in diameter with a depth of at least 20,000 meters. There are six known layers within The Abyss and each one has its own distinct ecosystem with unique flora and fauna, all of which are both fascinating and dangerous at the same time. The abyss also has a curse, the curse of the abyss is a forcefield that operates like a blanket - when one ascends, they unknowingly pierce this forcefield which then triggers the negative effects. But also it has a blessing, The one gifted gains the ability to observe The Force Field of The Abyss, something that only the predators of the deep are able to see, and is an incredibly useful ability for delving in the pit. It also appears to increase their physical fortitude to some extent. And that blessing is achieved by Sacrificing Humans to the Abyss Gods. Which is what bondrewd is doing to achieve the blessing and become the strongest.

Bondrewd And his Umbral hand Gueira Have a bit of romance going on, Bondrewd Favorites Gueira as his Favorite worker and even makes him do easer work than other workers.