User is or can transform into a demon-type dragon. These dragons have infernal and demon-like abilities, while also having the standard abilities of a dragon. Thanks to their hybrid nature, they are rare, more mystical and supernaturally conditioned.
Samael (Darksiders series) is a powerful Demon Lord with semi-dragonlike characteristics such as dragon legs, tails and claws.
Despite being one of the Four Great Dragons (alongside Azulongmon, Magnadramon and Golddramon), Megidramon's (Digimon) personality is so fiendish it doesn't bear the slightest resemblance to the other three.
After gaining the X-Antibody, Megidramon (Digimon) had its latent abilities drawn out, but became even more evil as a result. It is called the sealed incarnation of hell itself.
Dark Shenron (Dragon Ball)
Acnologia (Fairy Tail) the Black Dragon of Apocalypse.
Issei Hyoudou (Highschool DxD) is a dragon-demon hybrid.
Ryukotsusei (InuYasha) is a powerful dragon demon.
Shendu (Jackie Chan Adventures) is the Demon Sorcerer of Fire in the form of a humanoid dragon.
Drago (Jackie Chan Adventures), son of Shendu.
Ke-Pa (Kung Fu Panda: Legends of Awesomeness)
Kavaxas (Teenage Mutant Ninja Turtles 2012 TV series)
Fallen Angel (Valkyrie Crusade) is both an Fallen Angel and an Dragon Demon, making her a Nephalem.