|"Offer your soul..."|
|Eye Color||Light blue|
|Appearances||Deception IV: The Nightmare Princess|
Dead or Alive 5: Last Round (cameo)
|Voice Actor||Jun Shikano|
- “An automaton created by the Devil. She is starting to break down and is hardly able to move herself, but she teaches Velguirie what she needs to know to revive the Devil.”
- —Description on The Nightmare Princess website
Ephemera (エフェメラ Efemera?) is an automaton that serves Velguirie, the latter having lost her strength due to a long slumber, teaching her how to regain the pain to gather up and offer human souls to the Fiend and how to advance the story in Darkside Heaven, among other things. Much time has passed since her original creation by the Fiend, resulting in a body in such disrepair that she can barely move it anymore.
Acting on orders given to her by her now-sealed creator, she works towards his revival one day. As such, she guides Velguirie towards this goal throughout the story by way of the Quest Tree up until when Velguirie reigns over the world.
Deception IV: The Nightmare Princess
- Ephemera's title is "Your Guide to Reviving the Devil" (魔神復活への導き手 Majin Fukkatsu e no Michibikite?).
- In Dead Or Alive 5: Last Round, Marie Rose has a downloadable costume for Ephemera's outfit.
|Deception IV: Blood Ties • Deception IV: The Nightmare Princess|
Caelea • Veruza • Lilia
Velguirie (Fuyuno Kanata)
Millennia • Reina • Allura
|Alma Mueller • Celia Mevious • Devil • Dow Menigell • Ernest Love • Evelyn • Freise Grayden • Gallagh Belgosh • Lord of Prosslyn Castle • Lyla Gun Feyconia • Telma Mueller • Vale Brandeau • Victor Logos • Zeno Shin|
|Armor Break • Daemons • Deception Studio • Holy Verses • Twelve Saints|
Prosslyn Castle • Balmagyr • Lapria Park • Ruins of Scardzyini
Trapt Academy • Kagero Hospital • D. Seption Park