Other Scrapped Sonic 2 Enemies
From Sonic Retro
The following list contains other scrapped enemies which were to be featured in Sonic the Hedgehog 2. Some of the badniks were taken from concept art found here:
Though Dust Hill Zone was scrapped early in development, badniks were still designed for the level. Cactus is one of them - a badnik which would be either mobile or stationary and would flash green and red before exploding. The drawing of Sonic 1's Bomb badnik may mean the Cactus badnik behaved similarly to it. An armadillo is also present.
Dragonfly is a airborne badnik which drops sections off its abdomen which would explode as they hit the ground.
Mole is a badnik which appears to drill through walls to attack Sonic if he comes too close. This design may have led to the Grounder badnik.
A Penguin badnik with a spring on its nose which would attempt knock Sonic away. Sonic would be forced to roll on the ground to defeat it. The Crawl badnik behaves similarly.
Various incarnations of a Pig badnik which seems to have evolved from a tank/cannon. It appears it was to shoot projectiles from its snout.
Porcupine seems to be a land-based badnik. Possibly one that could only be rolled into.
Pterodactyl or Vulture
Pterodactyl or Vulture is a badnik which would fly in the air, opening a hatch in its stomach to drop projectiles on Sonic.
Unnamed StegosaurusHidden Palace Zone contained the Redz and Stego badniks, they may have been planned for that zone.
This Octopus may have been an early version of the Octus badnik.
Unnamed Flying Badnik
A strange Flying Thing which may have been an eagle or some type of dinosaur. It may have become the Balkiry enemy.
Some Unnamed Thing which may have been a lizard or some type of dinosaur.
An Unnamed Grasshopper. Sonic 3's Mantis badnik may have recycled this concept.
Unnamed Flying Badnik 2
Unnamed Flying Thing which may have also been a grasshopper.
Unnamed Spring Orb
A Spring Orb badnik which hops and tries to land on Sonic to do damage.
Various Dinosaurs of various sorts.