Photon-Earth is Taiga's armored power-up form, in which he becomes the Hero of Land and Sky. This power was granted to him through Ai Tennoji's psychic abilities, which drew out the ancient energy of the Earth that combines with Taiga's power of light, and is accessed through the use of the Taiga Photon-Earth Key Holder. Taiga's strength and resilience are increased at a slight trade-off for speed and mobility. This form makes its debut in episode 8.
Watching the battle, Kirisaki changed into Ultraman Tregear to test Taiga's new power, but it was still not enough to even injure him. Tregear left shortly afterwards, expecting nothing less of the son of Taro. Returning back to the form of Kirisaki, he draws a tarot card from a deck he was shuffling earlier, revealing the Fool. Defeat the Demon Photon-Earth's power continued to prove useful against other threats such as Majappa, Alien Nackle Odyssa, and Gymaira.