The Egg Cannon is a blue walker robot deployed by Dr. Eggman during the events of Sonic the Hedgehog (2006). The Cannon has several weapons, including lasers on its arms, missiles, and drills around its feet. The robot's main weak point is its core, which is perched atop its legs.
The Egg Cannon has several abilities, among which are launching homing missiles and flying. It also has a Vulcan Cannon, and is equipped with lasers on its arms.
Egg Cannons make their first appearance in Sonic the Hedgehog (2006). They only appear during levels and never in cutscenes. Like Egg Walkers, they attack the player until they are destroyed, or until the player gets out of its range. Cannons are not as common as Gunners and Flyers, and their role in the game is not very large. The robots do not often appear during levels with Iblis' minions. During the course of the game, the Cannons and Walkers prove to be difficult to defeat due to the strength of their armor.
Despite their toughness, the robots first appear in Wave Ocean, one of the earliest stages for Sonic. They are seen in nearly all of Sonic's levels, with the exception being Crisis City. The Egg Cannons have not appeared in another game since their debut.