As we all know, trolls tend to type in colors that can make the eyes bleed. Since we don't have a real idea of how The Signless would have selected as a color to hide behind, my headcanon is that he would use jade, after his "mother," The Dolorosa.

Fortunately, the same headcanon dictates that he doesn't have a quirk, since quirks seem to be tied directly to personality, signs, and a Lusus. Since The Signless does not have two out of the three, chances are he might not have developed one. So this paragraph here is more or less what will be seen.

If that bothers you, then just let me know right here. He will be more than happy to communicate through voice or video.