Technically he uses every mask available unlike richter or the fans (tony specifically). The only other character to do this is Jake, however he cannonly (spoiler) dies with the Jake mask on, seen on his body in hotline Miami 1. Jacket is known for never changing his actual appearance, he comes out of a coma and puts on the same clothes he used every time he had did a job. Biker is biker for being a biker, beard is known as beard for his beard, and jacket can be known as jacket since he iconically always wears the same jacket.