Lucifer (Helltaker/Examtaker)

Lucifer is the eighth demon encountered in Helltaker. She takes the role as the queen of Hell, and has the same title- "CEO of Hell." In Examtaker, which takes place much later on after the base game, Lucifer serves as a maid under Loremaster, having been usurped by her as the ruler of Hell.

But is it the Helltaker version being used? Or the Examtaker version?