Skiadrum

Skiadrum (スキアドラ Sukiadoramu) is a Dragon known as The Shadow Dragon, and the foster parent of Rogue Cheney.

History
Sometime during its life, Skiadrum taught Rogue how to use a Magic used to slay dragons known as Dragon Slayer Magic. Shadow Dragon Slayer Magic gave Rogue the ability to have characteristics of Skiadrum itself. However, Rogue then killed Skiadrum with the reason of finally becoming a "true" Dragon Slayer.