Cobra

Series One
In the first series, the Cobra acts as Jonny's temptation, though supplying him with great power. The Cobra is very creepy in nature, so Jonny purposely avoids him, even if it means losing sleep. He also taunts Jonny, and fights with the restless spirit of the Dragon Lord.

Series Two
When Jonny dies by Romus' hand, the Cobra screeches along with the Dragon Lord, as he is being re-transported.