- No Budget: Hikari Saga and Ghost Reverse Gaidens are filmed with chroma key green background with almost none of the actual set.
- The Other Darrin:
- As of Hikari Saga, Zoffy is permanently voiced by Hideyuki Tanaka in subsequent Heisei Era Ultra Series.
- Yapool was supposed to appear in-suit but that one was used in an outside attraction, forcing them to use the Mebius Killer as a placeholder while making up the fact that Yapool's spirit is possessing it. However, this is not an excuse as to why they resort to hire Ryoichi Tanaka to darrin Yapool's voice actor, Tessho Genda.
- Troubled Production: Suit example: the steps to maintain EX Zetton is the hardest since the suit was unstable. This is also the reason why it didn't get to appear in future media, unlike its other EX brethren Gomora and Red King.
Trivia / Ultraman Mebius Gaiden