If you loved Ultraman Mebius & Ultra Brothers, try Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Ultraman Mebius & Ultra Brothers
→
Try this next

Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace
What they share
Both films are directed by Kazuya Konaka, and they both carry the cozy, epic, foreign gem, playful, uplifting mood tags, and they sit in Action / Adventure / Science Fiction territory. If that's the register that drew you to Ultraman Mebius & Ultra Brothers, the second film will land in a comparable space — through a different lens.
cozyepicforeign gemplayfuluplifting
What Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace is
You befriend a hero in a battle against a monster born from a wish. But the line between good and evil blurs. The XIG Team fights alongside Ultraman.