Commentary:

So I finally got around to giving Rein a "proper" reference sheet. All the details are over here since the drawing took up the whole page.

• Rein translates to Nothing in English.

• His name is meant to reflect his simplistic design and lack of physical features.

• His skin color is a dirty white, almost gray color.

• His hands aren't claws, but rather just really pointed to show his long fingers.

• He always has an "agony" face, which is the star shaped eyes and mouth, however this can be changed from time to time depending on what he feels like.

• He hates humans for the things they've done to him, thus his face and appearance.

• Every day he calls someone on his phone, yet no one answers.