, Tregear incapacitated the New Generation Heroes after misleading them to a minefield asteroid. Inheriting their powers, the Tri-Squad attempted to continue the battle but it leads to their particles scattered in outer space. Taiga's particle of light merged with a young boy named Hiroyuki to save him from a fall after his Guesra companion "Chibisuke" was kidnapped. In the present day, Hiroyuki joined a private security organization E.G.I.S. to handle extraterrestrial cases while living in a society mixed with aliens from various point of origin. While handling a Villain Guild-related case, a fully recuperated Taiga awakens and therefore allows Hiroyuki to transform in order to combat giant monsters as two other Tri-Squad members, Titas and Fuma made their way to Earth and bonded with the former as a shared host. Tregear on the other hand was revealed to have been anticipating the Tri-Squad's arrival and orchestrated several monster and alien attacks for his own twisted enjoyment of tormenting others. In the middle of the series, his true agenda was revealed to corrupt Taiga into an evil Ultraman in order to fulfill his twisted vendetta against the former's father, Taro. Hiroyuki and the Tri-Squad's sheer bond purified Taiga and gave them the ability to fuse into Ultraman Taiga Tri-Strium. Growing desperate for the situation, Tregear initially try to harass the E.G.I.S. members and eventually summoned the planet-devouring monster Woola to Earth for his final endgame to consume both light and darkness. As the tension between humans and aliens begin to grow, Pirika's attempt to sacrifice herself in order to eliminate Woola leads to the realization that it was only cursed by its own hunger. Former Villain Guild members Alien Magma and Merkind offer their assistance to neutralize Woola as Taiga fed the monster with his and Tregear's energy, ending the monster's life in a peaceful way. After rejecting his last chance at redemption, Tregear fought against Taiga Tri-Strium and seemingly obliterated by exposing himself to the Quattro Squad Blaster, seeing Taro's image in the young hero in his final moments.
Episodes
''Ultraman Taiga The Movie''
Ultraman Taiga The Movie is the film adaptation of Ultraman Taiga announced on December 15, 2019 at Tokyo Dome City during Tsuburaya Productions' Tsubucon. In addition to the original cast members of the series, the movie incorporates guest appearance of the previous New Generation Heroes. The movie is currently put on an indefinite suspension from its original release date as a result of the ongoing COVID-19 pandemic in Japan. The film centers around Hiroyuki as the target of an unidentified opponent, forcing other members of the New Generation Heroes to appear one after another and together challenge the power of a great darkness. In addition, Taiga's father, Ultraman Taro, has come to Earth but attacked his own son under mysterious circumstances.
''Tri-Squad Voice Drama''
is an audio drama streamed on Tsuburaya Productions' YouTube channel. In addition to the serial above, special episodes were also included in different publications:
