The de-facto place of origin for the Ultra race, first appearing in the original Ultraman
- Appeal to Worse Problems: In Episode 39, he admonished the Ultra Brothers for fighting with Leo and reminded them of the imminent collision of the Ultra planet with Earth.
- Badass Beard: One of the few Ultras to sport facial hair.
- Badass Cape: His Ultra Mantle, which can transform into anything he wishes and can even deflect attacks. He gave it to Leo for the series, but got it back afterwards.
- Big Good: of the entire Ultra Series, although since he's a hermit, the Father of Ultra tends to fill in the more active needs of the role.
- Deus ex Machina: His role in Ultraman Leo is to make sure the day can be saved whenever things seem totally hopeless. He does against Alien Pressure (when Leo is shrunken down by the wizard), Alien Babalou (revealing him to be disguised as Astra to end the conflict between the Leo Brothers and Ultra Brothers), and Alien Bunyo (when Bunyo and Commander Black chop Leo into pieces).
- Godzilla Threshold: He only gets involved in the Ultra warriors' battles if there is no other way for whatever crisis they are facing to be solved, such as the Land of Light about to collide with Earth while the Ultra and Leo Brothers are engaged in in-fighting or Ultraman Belial successfully activating a weapon capable of destroying the universe.
- Hermit Guru: Usually lives as one, spending his time meditating and observing the Space Garrison from an isolated planet. In fact, no Ultra had ever seen King until Leo's battle against Alien Pressure forced him to make an appearance.
- I Have Many Names: He tells this to Ultraman Hikari in the Hikari Saga Gaiden, saying that "Ultraman King" is simply what humans have given him.
- Mysterious Past: It's known that the Ultras developed their powers from the Plasma Spark, but Ultraman King was already an Ultra long before that and his origin is unknown. Only Ultraman Nexus is more ancient than him.
- Non-Indicative Name: Despite his given title of "king", Ultraman King isn't actually the ruler of the Land of Light. It just befits his incredible power.
- Non-Standard Character Design: He's the only good Ultra with red eyes.
- The Omnipotent: His powers are virtually infinite and he's regarded as all powerful, and more than backs up that claim. He's capable of effortlessly bring back a dismembered Leo to life and curbstomped the immensely powerful Ultraman Belial, then created the Land of Light's moon around him to seal him away. In Ultraman Geed, he recreates the freaking universe.
- Physical God: When a species of immensely strong, 50 meter tall energy beings considers you their deity, you have to be this.
- Time Abyss: In keeping with the longevity of his kind, though He predates the Plasma Spark, and is at LEAST 300,000 years old, probably older.
Land of Light
Portrayed by: Yuuma Uchida (voice)
Ultraman Tregear is an evil Ultraman and the main antagonist of Ultraman R/B The Movie. This enigmatic warrior has ended lives on countless worlds by meddling with the hearts of its inhabitants. Arriving on Earth, he has met Katsumi's friend Yukio Toi, manipulating him and nurturing his hatred to transform him into the kaiju Snake Darkness.
Tregear returns in the succeeding series, Ultraman Taiga, as one of its primary antagonists, with more of his motives and backstory being revealed.
- Barrier Warrior: Ischyros Heba, An energy shield, durable enough to withstand Grigio Regina's Erga-Trio Cannon.
- Big Bad: Of Ultraman R/B The Movie: Select! The Crystal of Bond and later a recurring antagonist in Ultraman Taiga.
- Cool Mask: Has a shadowy black mask over his eyes and forehead that furthers his sinister appearance.
- Dark Is Evil: Black and blue it is.
- Dimensional Traveler: Is presented as this, he also brought Riku and Pega to this Earth and Katsumi to an alternate dimension of Pigmons.
- Diving Kick: Geargy Dirge, which he leaps and flying kicks his opponent with a drilling kick, effectively de-transforming an Ultra.
- The Dreaded: Perhaps even more so than Belial. Even before the premier of the movie, Tregear is noted to have the equal strength with Geed Ultimate Final and Ultraman Gruebe.
- Expy: Argubably to Ultraman Belial, as both Ultras originates from Nebula M78 and both were estranged from Father of Ultra and Taro. The R/B movie director Masayoshi Takesue confirms this and even states that he is planning to turn Tregear into a recurring evil Ultraman, like Belial.
- Eye Beams: Opto Dacrys.
- Fallen Hero: He was once a hero, and even a friend to Ultraman Taro. Once, but no longer.
- Finishing Move: Trera Ultigizer, an attack which he summons five energy balls that unleash dark blue beams.
- Gratuitous Foreign Language: Some of his attacks are Greek-based words.
- Jackass Genie: In a prequel novel, Tregear is responsible for destroying planets by tempting their inhabitants with wishes that backfired.
- Malevolent Masked Man: Or rather, Malevolent Masked Ultraman.
- The Man Behind the Man: He was responsible for the events of Ultraman R/B taking place by brainwashing Reugosite.
- Mook Maker: Can transform a random human into monsters.
- Mythology Gag: His black and blue coloration brings in mind to Chaos Ultraman.
- Not Quite Dead: He's shown to still be alive at the end of the movie.
- Red Eyes, Take Warning: His eyes always shine red.
- Shock and Awe: Two of it, the aforementioned Trera Ultigizer and Trera Cheir Phos.
- Has a mask-like design on his face, which is nigh-identical to Luin Lee/Mask from Gundam: Reconguista in G.
- Additionally, the movie's plot is that he aims to collect negative human energies and can create monsters based on drawings. Coupled with Tregear turning Yukio into Snake Darkness, this makes him an Ultraman version of Khan Digifer or Alexis Kerib.
- We Used to Be Friends: In Ultraman Taiga, it was revealed that he's from Nebula M78 (Land of Light) and he was close friends with Ultraman Taro but his greed consumed him.