The background and the foreground from the first level's bonus in Dragon Ball: Advanced Adventure.
Note: Meant to be used with a Layer 2 level.
The "background" currently isn't variable enough to be used for layer 2. The example level and map 16 even shows it would be exactly the same as a normal background due to the lack of corner and sideways shadow tiles. The MAP16 is also a bit unorganized, which makes it hard to tell what's for the background and what's actual ground.