Mega Man (Game Gear)
Since this game's graphics were directly ported from previous Mega Man games, there are tiles that go unused due to the Game Gear's aspect ratio.
These wave graphics are loaded into memory during Wave Man's stage, but cannot be seen.
Game Over (ID 07)
The "Game Over" theme in its entirety, which some may recognize from the 4–5 seconds heard in-game as Wave Man's theme from Mega Man 5. What's really odd is that although Wave Man is in this game, his stage uses Gravity Man's theme. It can also be heard in-game by freezing address DFED at the Game Over screen.
Unused Song 1 (ID 09)
Unused Song 2 (ID 0E)
There are also two completely unused music tracks. 09 is the first theme for Dr. Cossack's Citadel from Mega Man 4, and 0E is a badly mangled version of the stage select theme from the same game.