Sonic the Hedgehog 2 (16-bit) scrapped enemies
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Numerous enemies were conceived for Sonic the Hedgehog 2 on the Sega Mega Drive, most of which were not used in the final product. The following lists the known Sonic 2 enemies that were scrapped before being implemented in the game at any stage.
This list does not include six enemies that were implemented at some point; BBat, BFish, Gator, Redz, Snail and Stegway. While not seen in the final product, these six can be found in prototypes, with fully working code and graphics.
While some enemies were close to being implemented, others were little more than concept art sketches. This list is roughly ordered top-to-bottom from the closest to completion, to the least finished. Most of these enemies were created by Tom Payne, with Hirokazu Yasuhara helping to decide how they were to behave in game.
Enemies found in prototypes
Graphics for unused enemies exist in some of the leaked Sonic 2 prototypes suggesting they were close to completion, but lack any associated code.
Bubbler (バブラー) and Mother Bubbler (マザーバブラー)
A three-eyed flying enemy (Mother Bubbler) which would drop smaller, exploding enemies (Bubbler) which Sonic and Tails would need to avoid. This is listed as being set to appear in "Chemical Factory" (Chemical Plant Zone).
Perhaps more of an object than an enemy, a bouncing ball was planned that would cause Sonic to bounce off it it touched. It appears to have been redesigned at some stage.
While the Buzzer enemy made it into the final game, the enemy was extensively worked on during development. At one point a version was capable of firing a shot that would burn the bridges of Emerald Hill Zone. The graphics for these burning bridges can be found in prototypes.
Enemies with incomplete artwork
Development floppy disks from Tom Payne suggest work began on producing sprites for the following enemies, but none are ever thought to have made it into a build of Sonic 2.
A frog-like enemy that, according to the concept art, would make two short hops before making a large jump which reaches roughly twice the height of Sonic. Afterwards it would make two small hops and then turn around and repeat the pattern.
Early prototypes show a Snail enemy in Emerald Hill Zone which behaves similarly to a faster Moto Bug - travelling horizontally until it hits Sonic. A second snail was planned, however - this one climbs walls and when Sonic gets close, rolls into a ball and chases him. Judging from sketches, this "vertical mode" might have been developed first.
An enemy with springs designed to send Sonic flying if jumped on. The sketches suggest it was designed for "Desert Zone" and "Rock Zone". It might have become the Crawl enemy.
A collection of sketches produced by Tom Payne suggest plenty of other enemy ideas were on the table:
|Sonic the Hedgehog 2 (16-bit)|