The man is a minor character of The Promised Neverland. He is a former ally of Julius Ratri, who due to the latter's sacrifice to end the war between demons and humans, became one of humanities' first cattle.
1,000 years ago, the man was caught up in a war between the humans and demons. At some point, he met five other allies on the battlefield, including Julius Ratri, and they all became trusted companions, putting aside nations and races to fight together. One night after a whole day of fighting with countless causalities, the six allies discussed about what to do to end the bloodshed. Julius suddenly proposed to the idea of offering up a portion of humans to the demons, but the man and the others were against this, deeming that it was possible to end the war without anyone getting eaten.
A few days later, Julius once again brought up his previous proposal and wanted his allies to reconsider it; sick and tired of continuously having to sacrifice people. His allies refused once again; not only to save innocent humans, but because they didn't want Julius to suffer on his own and carry all of his burdens by himself. Julius, dissatisfied by their answers, revealed how he had already made a deal with . He betrayed his allies to achieve peace between the worlds, in which the bearded man and his four other allies were devoured by the demons, and in the process, became humanities' first cattle.
He was an extremely tall man with a very large build who had dark-colored eyes, thick eyebrows, and a well-defined nose. He had long, wavy light-colored hair which fell down to below his shoulders, along with middle-parted bangs. He had a very thick and long beard that covered the lower portion of his face, worn into sections of three and secured with ribbons.
He was a loud man who was very upfront with his feelings. At the same time, he was very optimistic and never even considered the idea about giving up, no matter how bleak the situation looked. He was also compassionate and had a strong sense of right and wrong.