archeologists find the world's oldest sheet music and the melody perfectly matches am I a man or Muppet from the Muppet movie
In the Super Mario All-Stars version of Super Mario Bros. and Super Mario Bros.: The Lost Levels, Bowser will not spawn in castle levels if the screen where he is supposed to be is entered while 5 other objects in addition to Mario are on screen.
In the footage, Mario walks to Bowser's bridge alongside three Bullet Bills and jumps onto the bridge while two fireballs from Bowser are on screen, reaching 5 other objects. This results in Bowser himself not appearing on the bridge, though interestingly, it also does not despawn the "offscreen Bowser flame generator", making it look like Bowser is still there, just further offscreen to the right (even though he isn't and the only thing to the right is the chamber in which Toad is being held).
This creates the humorous effect of Bowser seemingly being intimidated by Mario (possibly due to him being accompanied by three Bullet Bills), and appearing to have fled from his own battle arena while still continuing to attack Mario from offscreen.







