Cannon Flapper

Cannon Flappers (キャノンフラッパー) are recurring enemies in the Sonic the Hedgehog series. They are a mass-produced Flapper type Badnik created by Dr. Eggman.

Appearance
The Cannon Flappers look very similar to the Flapper, possessing the round torso, black undercarriage, dome-shaped head, airplane-like wings, two turbines on their backs that serve as jetpacks, pointy nose and panel-based mouth, and flight visors that Flappers have. However, they have a cannon on their aforemetioned undercarriage.

Sonic Heroes
In Sonic Heroes, the Cannon Flappers appear in a varitey of levels. The easiest way to destroy them is by using  Thunder Shoot to knock them out of the sky, leaving them open to any attack. If Thunder Shoot is leveled up to Level 2, then it may be enough to destroy it in one shot, just like the usual Flapper.

Sonic Rush
Cannon Flappers reappear in Sonic Rush, where they are the same color as the Flapper. They can be defeated by a Spin Attack or a Axel Jump. However, in Altitude Limit they can be difficult to avoid, due to Sonic & Blaze having to use a rocket platform, but can still be destroyed easily nonetheless.