Wolfius The Deceiver.

Appearance:
He is 6'1 and looks like a mix between a red fox and a northern timberwolf, he sports a black and white outfit which is done in a semi Victorian era style, he also has glowing red eyes and sharp fangs.

Personality:
Underhanded, cunning, sneaky, cold-hearted and manipulative - he is the kind of monster that will go to go any lengths to make the heroes look bad, even go as far as to attempt to 'befriend' them.

Powers:
He is super strong and agile and is also a master of disguise, he can also use mind control to trick victims into befriending him, he can also corrupt them and make them evil just like him and sometimes turn them into werewolf-like creatures to serve as minions.

Strategy:
When he appears in a new realm, he assumes the guise of another person or monster in order to fool his victims.

Once a victim is in his range, he uses his mind control powers to trick them into befriending him, all the while they don't notice that his evil is taking hold of them.

When it is time, he reveals his true form and his plan, if his victims become angered by the fact that he's been using them, he will lie and put the blame on them.

As he continues to use his mind-control on them, the victims will find themselves becoming corrupted and turning evil just like him, sometimes they may find themselves slowly becoming werewolf-like monsters to serve as minions.

Weakness:
Like a traditional horror movie werewolf, his main weakness is silver - if he is hit by any sort of weapon that is either made of silver or made to look like it - his powers will slowly and gradually weaken.

Eventually, a blow to the tail with a silver bullet will destroy him completely and also return victims back to normal.