Added several robot walking files

Start a new game in your new puzzle room.  I put a bunch of events there
temporarily, and if you talk to them they'll change your character
sprite.  The event will show the file name of the sprite before it
changes you.  The one at the bottom of the line will change you back to
Tak's normal sprite.  Let me know which one you like best.  If you have
suggestions for something else, let me know about that too.