Fiendish dragon

Fiendish dragons are a category of planar dragons who are found on the lower planes and who tend to be evil.

List of fiendish dragons
Howling Dragon:This dragon is found on the Windswept Depths of Pandemonium. They are very gaunt dragons who are covered in purple scales and have very thin, but powerful, wings. Their head is covered in a mane of bristly spines and their eyes are large and demented. When another creature stairs into their eyes, they can feel this dragons insanity.