518
rule
(sh.itjust.works)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
Why would the first three make sense, but not Mighty Mouse?
Because he has almost completely faded to obscurity. Most people under 30 probably wouldn't recognize him at all.
Superman not being one of the characters in this image is also kind of baffling. Unless the artist believes that Superman could bear the cross.