As the name replies, Egg Eagle's appearance is similar to an eagle or hawk. Depending on the character you are depends on the color Egg Eagle has. As Sonic, Egg Eagle is mostly red with white arms, legs, and beak. Its feet are red and white, as well as its arms. It appears to have yellow spikes on its head. Everything is the same with Blaze only all of the red is switched with blue. An Egg Mobile is located on its head.
In the battle, the Egg Eagle will attack by shooting 'cloud energy balls' which can be fairly difficult to avoid as it's attacking from the background. Another attack involves the Egg Eagle will fly upwards and stomp them. When it lands, its head will go down, giving Sonic/Blaze a quick chance to attack Egg Eagle. Several times, it will break the pattern by flying to the front (from the background) and slamming against the board Sonic/Blaze walks on (this to can be used to counter Egg Eagle because its head will go down, giving Sonic/Blaze a chance to hit it). Be warned, however, as not dodging the initial slam by jumping will leave Sonic/Blaze stunned, providing an easy target for the pecking attack afterwards. Egg Eagle can also use its turbines to whip up very strong winds, where Sonic/Blaze will have to run towards Egg Eagle to avoid falling off the edge (by rapidly tapping A and B buttons simultaneously). Once Egg Eagle is hit six/eight times, it is defeated.
The Egg Eagle appears similar to that of a V-22 Osprey VTOL Aircraft when it fires its machine guns.