Master of Mischief
From Wulfgard Wiki
Many-names is the title often given to the purported demon Lord of the Imps, the Master of Mischief, for he remains hidden and nameless most of the time. Without a great fortress in Hel or Hades to call home, Mischief simply tries to avoid being seen. Some claim the imps that are commonly used as slaves by other demons all secretly serve him, and he has a hand in everything. Others say he is a myth invented by the imps to make them feel better about their wretched existence.
Domain
No souls go to the Lord of Mischief, but if they did, it would be the very best ill-meaning pranksters.
Followers
The imps are the only followers of the Master of Mischief, whether he even exists or not.