"Egg Crawler" is an unofficial name for a giant mecha piloted by Dr Robotnik in the Sonic Holiday Special - Summer '96 story, Break Out! The machine was never given a name in print.

The Egg Crawler was a large egg-shaped walker with eight spider-like legs. It could crawl across terrain easily and was heavily armoured, but did not appear to possess any additional weapons. Robotnik used the walker's two forelegs to fight Sonic by jabbing, grabbing and throwing the hedgehog into walls. Sonic was unable to damage the machine until turning into Super Sonic after being thrown through a wall. Super Sonic tore into the machine from behind and broke into the cockpit, sending Robotnik smashing through the canopy. Of course Robotnik survived and escaped, but the Egg Crawler was reduced to a scrap heap.

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