- This article is about the event. For the episode, see "Birth of the Mega Demon (episode)."
The birth of the Mega Demon was a major event in the Real World, that also occurred twelve months prior in the Empty World. At this time, Bad Ben Ripley created an egg using four Atridax, parasites from the Empty World.
- Two Moons Rising – "Birth of the Mega Demon" (First appearance)
- Two Moons Rising – "The Battle for Bremin" (Indirect mention only)