Caterkiller (Pre-Super Genesis Wave)

The Caterkiller (created 3235) is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is a caterpillar-based Badnik variant created by Dr. Ivo Robotnik and later by Dr. Eggman, and one of the Classic Badniks. He appeared to be a high ranking badnik on the Island of Misfit Badniks.

Early missions
Caterkiller was the very first badnik to fight Sonic the Hedgehog, attempting to block Sonic's path before being hit by a wave of Mega-Muck which segmented him.

He was seen in a crowd scene for badniks at Casino Night Zone, was part of an ambush on a wedding between Sonic and Princess Sally, before it was discovered that it was just a play, and becoming the first badnik to fight Sonic at the Robo Hobo Jungle. Sonic managed to get some information regarding Nack the Weasel from Caterkiller after segmenting Caterkiller again and threatening to drag his head against the ground at high speed.

Cater-Killer's Coming
A significantly larger train-based Caterkiller was unleashed by Dr. Eggman for the task of terrorizing numerous towns by plowing through them. This version of Caterkiller plowed through Furville before heading for Knothole Village. Sonic was able to phase himself and Tails through the armor so that Tails could reprogram it to run off a cliff and into the sea. The Caterkiller took all of its segments with it this time.

Island of Misfit Badniks
When Sonic decided to investigate the Island of Misfit Badniks, Caterkiller and numerous other badniks ambushed him. Sonic quickly beat them segmented Caterkiller again, before Pseudo-Sonic emerged. There fight between them resulted in the island sinking. Caterkiller, referred to as a Commodore, watched Sonic dash away, completely oblivious to the badniks' survival. He promised that they would meet again soon.

Their revenge scheme of enlarging Pseudo-Sonic was interrupted by the Forty Fathom Freedom Fighters, who kept smashing badniks trying to stop them. Caterkiller led the last wave consisting of jaws, Bat Brain, and Buzzbomber to combat them. Caterkiller was able to wrap himself around Ray before Pseudo-Sonic knocked them all away. Big FLuke then crushed Pseudo-Sonic, the badniks, and Caterkiller into a cube.

Genesis
At least two Caterkillers reappeared in Marble Zone during the events of Operation: Clean Sweep, but this time they were created by Dr. Eggman. One Caterkiller attacked Sonic and Sally, but Boomer slammed the robot, causing it to explode. Another Caterkiller was later seen being destroyed by a reprogrammed Buzzbomber.

Personality
The train-based Caterkiller made by Dr. Eggman had significantly less intelligence than the smaller bug-based badnik, as a simple computer with no manner of A.I. runs the whole robot.

Powers and abilities
As a caterpillar-based badnik, its numerous segments can be used to hit opponents. Its length can be used to its advantage by wrapping itself around foes to squeeze them. The classic Caterkiller is distinguished by his numerous spiked segments that can detach from each other with ease.

As a train-based badnik, it has many segments, nigh indestructible armor, and great speed. It is powerful enough to plow through entire cities with ease.

Trivia

 * The Caterkiller is based on the badnik of the same name who first appeared in both the Genesis and Game Gear version of the original Sonic the Hedgehog. Like the comics, the original Caterkillar is known to see its segments scatter, but only if attacked wrong.
 * Writer Karl Bollers revealed that one of the long scrapped plots would have A.D.A.M. reactivate Caterkiller (the train version), as part of his rebellion against Dr. Eggman.
 * Caterkiller's train design shares a resemblance to the Egg Carrier's transport vehicles in Sonic Adventure.
 * Giant Caterkillers with a different design were used by an alternative version of Dr. Eggman, whilst he was trying to usurp the Olympic games in Sonic the Hedgehog #242. They also had the ability to fire lasers from their heads.