Tsuburaya mentions several times in the play that Ultraman is transformed from light and is known as the Giant of Light. However, there are actually three Ultramans who are very special and whose powers do not come from light.
Most of the Ultramans do belong to the Giants of Light, such as Ultraman from Ultra Star, who were able to evolve into giants due to the influence of the light of the Plasma Spark Tower. Ultraman on the ultra-ancient earth is also known as the Giant of Light by Tsuburaya. According to the setting, these Ultramans are from the constellation Orion and came to Earth because of the destruction of the planet. Even the new generation of Ultra warriors have been transformed from light to heroes. However, there are exceptions to everything, and the following will introduce these three Ultramans, whose powers are not endowed by the light.
First of all, we are going to talk about Ultraman Gaia. In fact, everyone is very clear about the power of Ultraman Gaia**, which is from the earth. He is a hero born from the convergence of the power of the earth. Therefore, it is indeed inaccurate to call him a giant of light, as his power does not come from the light. Despite the fact that Ultraman Gaia's powers** are distinctive, his strength is still very strong, especially in his supreme form. Some even believe that his strength surpasses that of Shimmer Tiga. However, since his power originates from Earth, Ultraman Gaia is also limited by Earth and cannot move freely in the universe like Ultraman Zero, and can only carry out missions on Earth.
Ultraman Agujo is a similar example. His power comes from the oceans of the earth. In terms of strength, Ultraman Agujo is also very powerful. According to the power ranking, Tiga, Dinah, Gaia, and Ultraman Aguru should be called the Heisei Four Masters. In the drama "Ultraman Obu Original Beginning", we can see that both Gaia and Ultraman Agujou appear on Earth. Because they can't leave Earth, they can't take part in the fierce battles that take place in the universe.
Ultraman G&D is not a hero born of light, and its true situation is indescribable. Although his father, Beria, was a giant of light, Belial lost the power of light after blackening. G&D was created using Belial's genes, so it has little to do with light. Despite this, G&D is highly regarded by Tsuburaya, and the Ultraman King in the show is even willing to give him powers and allow him to use many Ultraman capsules at will. However, what G&D regrets most is that he killed his father. In "Ultraman Zeta", as an orphan, he constantly expresses his understanding and longing for his father.
In fact, there are many similar heroes in Ultraman's works who have nothing to do with the light, such as the Anduru Warrior, the Mirror Knight, the Flame Warrior, and even several righteous robots. Which of them was made of light?In addition, the legendary Drassion is the one who created the universe.