Planet Juran (遊星ジュラン Yūsei Jyuran) is a planet that first appeared in Ultraman Cosmos. It is a rogue planet that enters and leaves the Solar System once every thousand years.



It is similar to Earth, having a very similar atmosphere but from space it appears purple. On the ground, there are mainly large rocks and mountains with foliage such as grass as bushes, the sky is yellowish instead of blue. Since Earth migrated, it has become more Earth-like with trees and a blue sky.

Scorpiss ravaged the planet and killed Parastan, but it is likely that Cosmos and Chaos Header repaired the damage, as it appears undamaged in Ultraman Saga.


Ultraman Saga

Chaos Header 0 on Planet Juran with Mienin

In Cosmos' universe, it is revealed that he and Musashi Haruno traveled there with the Chaos Header to watch over the planet's inhabitants.

Ultraman Ginga S The Movie: Showdown! The 10 Ultra Warriors!

Planet Juran appears at the beginning of the movie when Cosmos was fighting against Etelgar before he was defeated and sealed by Arena.


Planet Juran makes another appearance in this web series.

Musashi is seen with a Bolgils and later is contacted by Shin Asuka. Finally, Musashi turns into Ultraman Cosmos and leaves the planet to assist his friend and fight against the menace of the Bezelb.

Ultraman Geed

Cosmos sensing Geed's determination on the surface of Planet Juran.

During the final battle between Geed and Belial, Geed's determination was so strong that Cosmos was able to perceive it from as far away as Planet Juran, despite the planet being far away from Earth.

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