On-Screen Appearance is a character's appearance at the beginning of a Brawl in Super Smash Bros. Brawl. They do a pose or something else. Let's say you are playing a Brawl as Mario. When the match begins, Mario will jump out of a Warp Pipe and say "Let's Go" (although it sounds like "Let's-a-go"). CPUs also have On-Screen Appearance. This is only seen during the beginning of a Brawl or Special Brawl. Most you can't forget such as Bowser appearing with fire surrounding him, or Ness appearing as a burned kid. Some are quite funny, while others are just appearances.