The early Kastle Kaos screenshot from the Nintendo Player's Guide
In the Nintendo Player's Guide for Donkey Kong Country 3: Dixie Kong's Double Trouble!, there is a photograph of KAOS's first head flying around Kastle Kaos while his body is hovering with no flames. This does not occur in the retail version.
There are unused sprites in the game. They are sprites of Kracka (which were eventually used in the Game Boy Advance version) and unused sprites of Kopter (some of which were eventually used in Donkey Kong Land III).[4][5]
Karbine originally was not intended to be an owl; instead, the original design for the enemy depicted a robotic ape with a propeller on the tailbone area.[6] This design can be see on page 33 of the 89th issue of Nintendo Power.