- Merodachaius is an unknown entity from the Puella Magi Madoka Magica VS Kamen Rider Gaim fanon continuity family.
- "Travel from dimension to other dimension, spread the wish machine and fruits of transcend around universe, seek the evolution of beings... that's my only goal"
Merodachaius is the main antagonist in Puella Magi Madoka Magica VS Kamen Rider Gaim. He is responsible for the creation of Fruit of Helheim as well as Incubators and the Mahou shoujo systems.
- Voice actors
- Tomokazu Seki (Japanese)
- David Vincent (English)
- Catchphrase: "Sorrow, and despair, the two things makes holy maiden evolved"
- He considers Goddess Madoka and Demon Homura as defective products.