Submitted by: Dr. Eggfan

Eggfan has found some missing items from Sky High Zone. The top three animations are from a boulder probably rolling down a hill during Act 1. The bottom left sprite is a missing floating platform, and the bottom right is an unusual object, with no known reason to exist. The bottom middle sprites are of a specific floating bird, mentioned below.

Submitted by: Jan Abaza

Not particulary a missing sprite, but an obscure addition. This extra life can be found in the top left of Sky High Zone act 1, and if you run into it from the left side, some birds will fly out of the trees with no particular purpose.

Submitted by: Dr. Eggfan

The Gachou Mecha boss from Sky High Zone, like the one in Underground Zone, had a lot more body than lead to believe. It has it's whole body, and feet animations, as well as a chute coming from its backside. This was probably meant to be used to extrude the baby ducks which attack you.

Submitted by: Tux / Rlan

This is the Game Gear boss when using Master System screen option in eSMS. Unlike the boss from Underground Zone, this one doesn't use the body at all, the neck isn't attached to anything, so it wasn't used to keep the widescreen version correct.

Submitted by: Tux / Rlan

And for comparison, the Master System version.

Like the many Eggfan picture above, the Gachou Mecha boss was probably mean to have a much smaller neck, with it's body attached at the bottom. It probably made the enemy easier to attack since you could hit it's body rather then the head, causing too many problems.