While Planet U40 appears to be full of lush green landscape, beneath the tranquil exterior lies a highly advanced civilization of human-like beings with advanced technologies and cities located in the crust. Additionally, colonies on other planets planted by their ancestors have form new civilizations.

The ancient U40 people created Ultra Mind to spiritually evolve into higher, enlightened beings. The physical and spiritual changes that occur during this process are called Ultra Change. In the present timeline, only the top 9 warriors on the planet are able to access the giant Ultra Form.

U40 appears to be governed by a ruling council of elders who follow the lead of the Great Sage, they own the largest space fleet in the multiverse.
- The☆Ultraman (1979)

This planet is covered by extreme geological and climatic environments.

The mysterious Ring of Light is located at the highest mountain peak, known as Crusader's Peak. It is a sentient force that bestows several chosen ones with the ability to transform into Ultras. Any human race from all around the universe who wishes to become Ultras must accept the challenge of climbing up the peak, a near-impossible task that requires the strongest will, wisdom, and strength.

The Ring of Light is responsible for instructing all O50 Ultras with prophecies, distributing new missions, abilities, and weapons continuously to defend justice throughout the universe. The top warriors of O50 such as Ultraman Orb and R/B had been assign the right of use of light energy gadgets.
- Ultraman Orb: The Origin Saga (2016)  [ō]  

Juran enters and leave the Solar Syetem once every thousand years. Despite its nature as a periodic rogue planet, it spends great periods of time without a star.
Some time ago, the planet was rampaged by Chaos Header, causing the extinction of an ancient civilzation. Later, Chaos Header 0 and Ultraman Cosmos repaired the damage, and Juran has now become an established and advanced ecosystem paradise, serving as a benevolent monster reserve protected by those two giants.
- Ultraman Cosmos series (2001)

All life forms on Royal planet Kanon have their lives bound to the gigantic Tree of Life. It has created a spiritual deity: The War Deity, as the guardian of the planet. Her powers are passed down to the female royal descendants and she is capable of manifesting in the real world to protect the Tree of Life and Planet Kanon itself via a ritual.

The royal boundary covers serveral planets nearby, including the mining planet Kurin, industrial planet Zain and frontier planet Ebil. Kanon is responsible for holding the Galactic Federation Peace Conference, and the current War Deity plays a leading role in the Galaxy Rescue Force.
- Ultraman Orb: The Origin Saga (2016)  [ō]  

Planet Tenebris is surrounded by extremely concentrated Dark Energy. No other species can go near the suffocating environment except for the dark species, who become immortal by relying on the unlimited supply of Dark Energy.

The dark species is a highly invasive species, growing sturdily by absorbing or transforming Light Energy into Dark Energy.

The League of Dark ruled Tenebris from the Dark Palace, but it was eventually wiped out by Ultraman Taro and Ginga.
- Ultra Galaxy Fight: New Generation Heroes (2019)  ☰   [ō]  

The Imperial Capital Fortress Malebrandes, a planet-sized military spaceship, was built to be the headquaters of Belial's Galactic Empire Army using resources absorbed from planets destroyed by the empire.
The ship was full of facilities for the vast troops, five claws for grab holding a planet, and vast amounts of mining wires to directly harvest a planet.
The Galactic Empire fell under the strike back of Royal Esmeralda-Anu-2D allies, as a result it became a ruin, however the androids are still active.
- Ultraman Zero: The Revenge of Belial (2010)  [ō]  

Unlike any other high-level civilization in the multiverse, Earth and humans exist in many parallel universes. However, in the World of Neo Frontier Space, the light of the Ultra-Ancient people exists in a hidden pocket dimension: R'lyeh that contains the ruins of the Ultra-Ancient city.
The Human race in this universe was formed by 195 countries on Earth, under the protection of Ultraman Tiga and Dyna from the invasion of Darkness. They are expanding their frontier to the entire Solar System.
- Ultraman Tiga series (1996)
- Ultraman Dyna series (1997)

The Spheres (Space Orbs, the floating organisms) are a hive mind of life forms from deep space. They formed the living planet Gran-Sphere by gathering a large number of siblings. The Gran-Sphere can travel through the multiverse by generating wormholes.
They attack on advanced planets, intending to absorb its civilians and creatures into their own being. An extension of their modus operandi includes creating a Spheresaurus to absorb the targeted planet's energy and use it to enhance the Sphere Barrier to the point where it shrinks.
The Spheres were once annihilated by Ultraman Dyna, but currently, they have bred in large numbers and are aiming to absorb the energy of the Eternity Core.
- Ultraman Dyna (1997)
- Ultraman Decker (2022)

The Sacred Ground was the motherland of the first Ultra-Ancient civilization. A myth has been circulated by the Absolutians and people of M78 nowadays, stateing that:

“At some point in the Ultra-Ancient time frame, the heretics worshiped the devil as their god-king before God Noa had driven away all darkness on the planet. Unfortunately the civilization was split to decline and the miracle of Noa was hidden inside the ruins of shrines.”

In the present time, when the flames of war between those two races spread on this planet, God Noa appears.
- Ultra Galaxy Fight: The Destined Crossroad (2021)  ☰   [ō]  
- Ultra Galaxy Fight 4 (2024)  ☰  

The Monster Graveyard is a floating continent located in a pocket dimension and a distortion of spacetime. When the opponent of any monsters and aliens, and sentient beings from every parallel universes is deceased, their soul is lifted and sent to the graveyard, which acts as an afterlife for them.
The graveyard  can be accessed through the Grave Gate or a temporary gateway called the Ultra Zone located in a random nature.
A river of magma called the Valley of Flames is located under the floating continent, this is a place where several formidable objects and souls were sealed by the Ultras.
- Ultra Galaxy Legend (2009) Movie  [ō]