User blog comment:Zathronas/Analysis by an author: Volume 2 episode 4 Painting the town.../@comment-25091485-20140816014551/@comment-24218038-20140816022749

Why do you think the mask is recent? The only old white fang we've seen had no details on them in the episode Black and White. Here's the transcript of episode 4 on this.

Blake: The masks are a symbol. Humanity wanted to make monsters out of us, so we chose to don the faces of monsters.

Sun: Grimm masks... That's kind of dark.

Blake: So was the guy who started it. (Puts her mask on and walks on.)

The only way Adam could be the one who created the mask is if he is the leader who toppled the old regime.