Unidentified dragon (From the Shadows)

This dragon was part of a historical exhibit at the Canterlot History Museum, possibly being based on a real historical dragon. Shadow Lock's magic animated the exhibit, bringing the dragon and several knights to life while trapping and  inside it. However, Fluttershy and Spike were able to change the recreated history, helping the dragon and ponies resolve their conflict peacefully rather than fighting each other.

Appearances

 * Friendship is Magic issue 52
 * Friendship is Magic issue 53