The origins of Elvira, Mistress of the Dark remain unclear, but she appears to be a genuinely supernatural entity. She was made temporary caretaker of the House of Mystery (by the House itself, apparently) in the absence of Cain, and was tasked with finding him, though she seemed not to consider this a matter of urgency. Her whereabouts since Cain resumed his tenancy of the House are unknown.
- Elvira is a character adapted from other works including shows and movies. She is originally played by actress Cassandra Peterson. The film, in which this character was seen prominently, was Elvira, Mistress of the Dark.
- 11 Appearances of Elvira (New Earth)
- 1 Images featuring Elvira (New Earth)
- Quotations by or about Elvira (New Earth)
- Character Gallery: Elvira (New Earth)