Mist Dragon

The Mist Dragon is a mini-boss, and the first of the two dangerous dragons (the other being the Earth Dragon) who appear in Sonic and the Black Knight. It is fought in Misty Lake after Sonic says he needs a bigger challenge. Overhearing this, Merlina summons "The ruler of this lake, the Mist Dragon". The Mist dragon is covered in thick, green and yellow scales. It has two large wings on its back which it uses to fly to and from the battle. Its weakspot is its large cyan nose horn. It only attacks Sonic by swiping at him with its head. This attack can be avoided by jumping backwards. After receiving a certain amount of damage the dragon will shake its head, roar and go into a short attacking frenzy. It is best to stay as far away from it at possible. It is defeated far more quickly if the Dragon Slayer or Dragon Slayer+1 abilities are used against it. After it is defeated Sonic can continue on in the level.

Being a Mist Dragon, it most likely has the ability to control and produce water. However, this is never seen in-game.