The Crack is a variation on MJSTUDIO's mascot Eggy that appears on a mysterious image from Arcane Kids' Twitter header, and the name of a fictional cracking program for Z Web TV's online broadcast control system.
The Crack appears similar to Eggy with a few exceptions. The bottom half of its shell is completely missing, with the legs and feet remaining suspended in their proper places.
The Crack sports two interconnected eyes similar to Sonic the Hedgehog, and has two thin cracks run up the right side of his face. The Crack also wears red sneakers as opposed to Eggy's black boots.