Tiga, Dyna, and Ultraman Gaia Novel: The Adventure in Hyperspace (小説 ティガ・ダイナ&ウルトラマンガイア 超時空のアドベンチャー Shōsetsu Tiga Daina & Urutoraman Gaia Chō Jikū no Adobenchā) is a sequel novel following the events of Ultraman Tiga, Ultraman Dyna, & Ultraman Gaia: The Decisive Battle in Hyperspace.
20 years after the events of the movie, peace continues in Tsutomu's world where he and his friends are now adults. Suddenly one day, Tsutomu, Yu, Hiroshi, Kohei, Wataru experienced the same dream saying "The Red Sphere's resurrection will once again resurface the crisis of world destruction!" Will the world end? Wasn't the Red Sphere already destroyed? Must it be that monster again...? This makes an unsettling Tsutomu scream, "Gamu, Save this World!"
- Tsutomu Shinsei
- Yu Hirama
- Lisa Nanase
- Takeshi Yoshioka
- Gamu Takayama
- Hiroshi Kashimada
- Wataru Kosugi
- Kohei Nakahara
- Gousuke Hibiki
- Shin Asuka
- Ryo Yumimura
- Toshiyuki Kohda
- Mai Midorikawa
- Tsutomu Nakajima
- Kouhei Kariya
- Red Sphere
- Kaiser Gyrares XIII
- King of Mons
- Neo Geomos
- Psycho Mezard
- Chaos Jirak
- Demon Gyrares XIV
- While obtaining the monsters from their respective universe, Charija described each world differently based on the real life audiences' perception of the Heisei Era Ultraman Series.
- Galra: As the Galra from Neo Frontier Space World had already died and entered Dyna's period, Charija claimed that he obtained it from a world of flying pterodactyls. The latter may be referring to the Shibito-Zoigers.
- Psycho Mezard: Charija proclaimed the monster to have arrived from a world where a pair of red and blue Ultraman were at odds with each other, referring to the intense rivalry between Gaia and Agul from episode 18 until 26 of their home series.
- Chaos Jirak: It came from a world where its respective Ultraman is a blue warrior empowered by the Sun and Moon, referring to Ultraman Cosmos.
- Nosferu: It came from a world where monsters are actively killing humans while a group of attack team operated secretly from the public as a stranger becomes a silver giant. He also made an indirect comment about the gruesome nature of the world, referring to how Ultraman Nexus is supposedly a series for adults, but was misplaced into an early morning time slot for children.
- Despite being a continuation from its movie, the novel has a continuity error which conflicts with the setting of Ultraman Gaia. From the movie, Tsutomu summoned Gamu Takayama from post-episode 26, judging from Ultraman Gaia's V2 evolution and use of Supreme Version. The novel here has Tsutomu meeting Gamu again, but the setting had taken place in episode 19, where Ultraman Agul was actively attacking the Aerial Base.
- Dyna was shown capable of assuming both Strong Type and Miracle Type, despite magazines and other external sources established that the Ultra could only assumed one Type Change per transformation before returning to Flash Type.
|Showa||Ultraman (Operation Gold Rush, Umezu, Nohara, Kazumine, Operation Giant) | Ultraseven (The Targeted Star, Kuwata, Kazumine) | Return of Ultraman | Ultraman Great Fierce Battle | Ultraman Ace | Ultraman Taro (Uchiyama, Ishikawa) | Ultraman Leo | Mirrorman | The・Ultraman | Ultra Brothers Story | The☆Ultraman | Ultraman 80 | Decisive Battle! Brothers | Ultra Super Legends|
|Heisei||Ultraman Great (Manga, Novel) | Ultraman: Super Fighter Legend | Gridman the Hyper Agent: The Demon King's Counterattack | Ultraman Tiga (Forest of the White Fox, Kiriel-Bito) | Ultraman Dyna (Star of Peace・The・Other) | Ultraman Gaia (The Day Algona Arrived, Superhuman Legend) | Heisei Ultraseven (Ultraseven EPISODE: 0, Ultraseven EVOLUTION) | Ultraman THE FIRST | Ultra Q dark fantasy | Ultraman THE NEXT | Ultraman Nexus ("N" THE OTHER, Second Coming -Dreams-) | Ultraman Story 0 | Ultraman Max | Ultraman Mebius (Anderes Horizont, Fight! Ultra Brothers, Armored Darkness) | Mega Monster Battle: Ultra Adventure | Ultra Monster Kattobi! Land | Ultraseven X | Ultra Ninpocho | Ultra Idemitsujin | Ultraman Sisters | Ultraman: Another Genesis | ULTRAMAN | Seven Queu: Lovely Idol | Ultra Monster Anthropomorphic Project (Novels, Galaxy Days, POP, Ultra Journey, The Beginning Stories) | TSUBARAYA X HAYAKAWA (Return to Tatara Island: Ultra Monster Anthology, Ultraman Dual, Ultraman F, Ultraman Dual 2) | Ultraman Orb Chronicle | Ultraman R/B (Ultraman R/B The Movie Novelization, Ultraman R/B Novel | TDG: Adventure in Hyperspace | Anime ULTRAMAN Novel|
|Reiwa||Ultraman Tiga: To the Shining Ones | SSSS.GRIDMAN NOVELIZATIONS | Hime and Samurai | ULTRAMAN SUIT ANOTHER UNIVERSE | Ultraman Dyna: Zero Drive Towards Tomorrow | Ultraman Taiga Novel | SSSS.GRIDMAN ANOTHER LOAD | Ultimate Force Zero ～Side Story～ | Diaclone VS. Gridman | Fight! Sevenger | DARKNESS HEELS ―Lili― | Mirrorman 2D | Another Gene|
|Foreign||Ultraman G | Ultraman: Negative One | Ultraman Tiga | Redman | The Rise of Ultraman | The Trials of Ultraman | The Mystery of Ultraseven|