Board Thread:General Discussion/@comment-26545468-20150629205703/@comment-75.91.51.195-20151230032438

He didn't change his face or "shape-shift." During the auction fight, his hand is shown by his face to show he's switching his mask. There ARE such things as prosthetic masks. And with his skills, there's no doubt he could get a reference pic of Arima and make a realistic looking prosthetic face piece. He could've put it on between getting up from the stage and entering the fight. And they're easy enough to put on. When he saw it had no real psychological effect on Hirako, he probably discarded it.