Egg Flyers are hovering attack drones created by Dr. Eggman that appear in Sonic the Hedgehog (2006). They appear all over the Soleanna region and attack with machine guns and missile launchers. They often appear over areas that the player cannot cross easily, serving as stepping stones for Sonic and Shadow's homing attacks.
There is an advanced variant of the Egg Flyer called the Egg Buster. They share the same behaviour and weapons as the Flyers but take two hits to destroy.
The Egg Flyer closely resembles the GUN Hawk robots from Sonic Adventure 2, though this may just be a coincidence.