There are fourteen minions of The Ruthless Seven with high ranks on the demon society, which can be split into two groups.
The first group guards the Demon Forge where some sort of ritual is being prepared for their leaders. This group consists of Ushuriel, Madareth, the brothers Golgordan and Latrivan, Annihilon, Zugurosh and Hellgorak.
The second group works for the Ascending Ferumbras and helps him in his goal to gain godlike powers. They are Mazoran, Plagirath, Ragiaz, Razzagorn, Shulgrax, Tarbaz and Zamulosh.
The Ruthless Seven Minions - Guardians of the Demon Forge
You must defeat the guardians of the Demon Forge in order to complete the The Inquisition Quest.
The Ruthless Seven Minions - Guardians of the Ascending Ferumbras
You must defeat the protectors of Ferumbras in order to complete the Ferumbras' Ascension Quest .