Balrog is a character from Cave Story. He is shaped like a lunchbox/suitcase/toaster. If you do not know what Cave Story or Balrog is, then I suggest you go and play the game and find out.
I made
something like this eariler, but I rushed it, and my printer was failing at colors and decided to made everything a shade of pink, so I changed some things around and fixed the colors. This thing is made entirely of card paper and tape. Most of the tape is on the inside.
EDIT: If you want to make one of your own, then click on the attachment.