Who is it? (Made by Bill 1)

Description: Who could it be? The figure behind the door, but who the figure is will never truly be known. Some say it may be the Man who Speaks in Hands. Some say it's the doomed royal scientist, Gaster. Some say both. But we'll never know for sure, will we? A being of mystery he is. Pay him a visit when you get the chance. It's rather lonely behind that mysterious door. This was made by Bill 1, who will post this here: http://aminoapps.com/p/k804eu