Marchosias
A great marquis of hell who commands 30 legions, Marchocias appears as a she-wolf with griffin wings and a serpent's tail, and spit flames.
Below you will find a list of demons that are associated with or can take the form of a wolf.
Amon
Amon, the 70th spirit, can appear in the form of a wolf with a serpent's tail. He vomits flames.
Vrykolakas
The Greek equivalent of the Slavic/European vampire was called the "vrykolakas" derived form the older Slavic term "vblk'b dlaka", meaning wolf pelt wearer.