The Volkan Cannon first appeared in Sonic Adventure 2 as one of the standard weapons used by Tails and Dr. Eggman. It is a mini-gun which serves as a part of the weapon arsenal onboard Tails' Cyclone and Dr. Eggman's Egg Walker and is mounted on the front of the respective vehicle as a small rifle. When used, the Volkan Cannon fires small, but powerful bullets with great impact, straight ahead in front of the users battle vehicle.
While the Volkan Cannon can be used to destroy enemies, it does not possess a wide targeting system like the Lock-On Missile. It is therefore primarily used to destroy wooden containers that blocks the path. After the user obtains the Bazooka/Large Cannon upgrade the Volkan Cannon can fire larger and more powerful bullets and can destroy iron containers.
In the remake, Sonic Adventure 2: Battle, the Volkan Cannon can be fired on a faster rate due to the improved game engine.