In my opinion, that's definitely plausible (even his name contains the word 'wolf' in it....) and he has pretty wolfish facial characteristics too but who knows? Maybe Yana-sama will add a twist to his character~
Yep, I believe so as the people before me have stated he does have a rather wild appearance and acts like a loyal pack member/villager I mean come on if *spoilers ahead* Yana-sama made another less spoken or rather seen villager/character is confirmed by one of snakes companions to smell like it then Wolfram's got to be one.
I hope so. Evidence -
1) He looks like a werewolf in human form
2) His name has wolf in it
3) He is very loyal to the witch and such people, such as a dog for its owner. Why can't werewolves and dogs be similar in that way?
This is my evidence. I'm pretty sure all of this is pragmatic for him and his character.
He is not. At Chapter 99, it was revaled that he is a normal human. And everything about the witch or werewolf was fake. So Sieglinde Sullivan actually was a normal human, not a witch. And the story about Green Witch was fake.