Giant enemy crab refers to an enemy boss in the PlayStation 3 title Genji: Days of the Blade.
When the game was introduced at the Sony press conference at the E3 in 2006, the Sony spokesperson said the game was based on actual Japanese history, and at that moment, the giant crab emerged on the screen, presenting demo content from the game.
Genji: Days of the Blade was announced at the Sony E3 on May 8th, 2006.
A main producer of the game, Bill Ritch, announced that the game involves famous battles, that occurred in the actual history of Japan.
Within minutes after this statement, the on-screen footage depicted a battle going on with a mid-level boss, fitted with the name “giant enemy crab”.
In 2006, the theme occurred in a number of various sources, from gaming forums like GameSpot, Team Xbox Forum, and IGN to YouTube parodies and remixes.
Sony would be mocked by many for the claim of presenting actual history, while having such an obvious fantasy element in their game.