Ultraman Wiki

Dinosaur Squadron Koseidon (恐竜戦隊コセイドン Kyōryū Sentai Koseidon) was a 1978 tokusatsu series created by Tsuburaya Productions. Although not the official title, after the 41st episode of the series during airing, the shows title name changed to Dinosaur Squadron Koseidon Fight Human Cannon Koseider (恐竜戦隊コセイドン 戦え 人間大砲コセイダー Kyōryū Sentai Koseidon Tatakae Ningen Taihō Koseidā)


Set in the future where time travel is made possible through the discovery of Tachyon, a particle that moves faster that light, humanity can freely go back and forth between the Mesozoic, Cretaceous and the present, making colonies on Cretaceous earth. The Time Dimension Control Bureau boasts a special team, the Time G Men · Koseidon Corps, driving the huge time machine Koseidon. They protect the safety of Cretaceous and time travel.

In 2001, Japan was attacked by heat rays and freeze rays, and it turns out that the attack is from the Cretaceous. In response to this abnormal situation, Koseidon requested by the Time Dimension Control Bureau and started investigation in Cretaceous. They encounter a fugitive from outside the Earth -- Princess Altasiya and her robot Bikuraji. The invader Alien Godmes set their sights on Earth as an invasion target and the Koseidon troops will fight to stop the invasion of the Earth.



  • Toki Go/Koseider: Tetsuya Onishi
  • Himugashi Iron: Sankei Keiji
  • Butsukusa-Urara: Miyu Ichijo Nozomi (up to beginning the first 14 episodes)
  • Haruna Mari: Takako Kawasaki (up to the first 28 episodes, finale)
  • Arutashiya: Nanami Murano
  • Mori Moryi: Sato GaJiro
  • Banno-Power: Kusano Daigo
  • Tachibana Mitsuru: Hiroyuki Kumagai (up to Episode 6)
  • Tachibana Lina: Michiko Nagahama (up to Episode 6)
  • Kaido Space-time Management Secretary: Hideo Kanze



  • This series is NOT to be confused with Kyoryu Sentai Zyuranger, the 16th Super Sentai series, which has a similar title.
Showa Series Ultra Q | Ultraman | Ultraseven | Return of Ultraman | Ultraman Ace | Ultraman Taro | Ultraman Leo | Ultraman 80
Heisei Series Ultraman Tiga | Ultraman Dyna | Ultraman Gaia | Ultraman Cosmos | Ultra Q: Dark Fantasy | Ultraman Nexus | Ultraman Max | Ultraman Mebius | Ultraseven X | Ultra Galaxy Mega Monster Battle | Ultra Galaxy Mega Monster Battle: Never Ending Odyssey | Neo Ultra Q | Ultraman Ginga | Ultraman Ginga S | Ultraman X | Ultraman Orb | Ultraman Geed | Ultraman R/B
Reiwa Series Ultraman Taiga | Ultraman Z | Ultraman Trigger: New Generation Tiga | Ultraman Decker
Outside of Japan Ultraman: The Adventure Begins | Ultraman: Towards the Future | Ultraman: The Ultimate Hero | Ultraman (Netflix film)
Original Video and TV Special Ultra Fight | Ultraman vs. Kamen Rider | Ultra Super Fight | Ultraman Nice | Heisei Ultraseven | Ultraman Neos | Ultraman: Super Fighter Legend | Ultra Idemitsujin | Ultra Zone
Showa Movies Ultraman: Monster Movie Feature | Ultraman, Ultraseven: Great Violent Monster Fight | The 6 Ultra Brothers vs. The Monster Army | Ultraman (1979) | Ultraman: Great Monster Decisive Battle | Ultraman ZOFFY: Ultra Warriors vs. the Giant Monster Army | Ultraman Story
Heisei Movies Ultra Q The Movie | Revive! Ultraman | Ultraman Zearth | Ultraman Zearth 2 | Ultraman Tiga & Ultraman Dyna | Ultraman Tiga, Ultraman Dyna, & Ultraman Gaia | Ultraman Tiga: The Final Odyssey | Ultraman Cosmos: The First Contact | Ultraman Cosmos 2 | Ultraman Cosmos vs. Ultraman Justice | ULTRAMAN (2004) | Ultraman Mebius & the Ultra Brothers | Super 8 Ultra Brothers | Ultra Galaxy Legends The Movie | Ultraman Zero The Movie | Ultraman Saga | Ultraman Ginga Theater Special | Ultraman Ginga Theater Special: Battle Royale | Ultraman Ginga S The Movie | Ultraman X The Movie | Ultraman Orb The Movie | Ultraman Geed The Movie | Ultraman R/B The Movie
Reiwa Movies Ultraman Taiga The Movie | Ultraman Trigger: Episode Z | Shin Ultraman
Spin-Offs Andro Melos | Ultraman Tiga Gaiden: Revival of the Ancient Giant | Ultraman Dyna: The Return of Hanejiro | Ultraman Gaia: Gaia Again | Ultraman Mebius Gaiden: Hikari Saga | Ultraman Mebius Gaiden: Armored Darkness | Ultraman Mebius Gaiden: Ghost Rebirth | Ultra Galaxy Legend Gaiden: Ultraman Zero vs. Darklops Zero | Ultraman Zero Gaiden: Killer the Beatstar | Ultra Zero Fight | Ultra Fight Victory | Ultraman Orb THE ORIGIN SAGA | Ultra Fight Orb | Ultra Galaxy Fight: New Generation Heroes | Ultra Galaxy Fight: The Absolute Conspiracy | Sevenger Fight | Ultra Galaxy Fight: The Destined Crossroad | Shin Ultra Fight | Ultraman Regulos
Rebroadcast Shows Ultraman Retsuden | New Ultraman Retsuden | Ultraman Zero: The Chronicle | Ultraman Orb: The Chronicle | Ultraman New Generation Chronicle | Ultraman Chronicle: ZERO & GEED | Ultraman Chronicle Z: Heroes' Odyssey | Ultraman Chronicle D
Other Series Kaiju Booska | Captain Ultra | Mighty Jack | Fight! Mighty Jack | Operation: Mystery | Chibira-kun | Mirrorman | Redman | Triple Fighter | Emergency Directive 10-4·10-10 | Iron King | Fireman | Jumborg Ace | Mirror Fight | Army of the Apes | Pro-Wres no Hoshi Azteckaiser | Dinosaur Expedition Born Free | Dinosaur Great War Izenborg | Dinosaur Squadron Koseidon | Gridman the Hyper Agent | Superhuman Samurai Syber-Squad | Booska! Booska!! | Mirrorman REFLEX | Bio Planet WoO | Mirror Fight 2012 | Ultraman The Prime | Ultra Science Fantasy Hour | Gridknight Fight
Anime The☆Ultraman | Ultraman Kids | Ultraman Graffiti: Wild! Ultra Country | Ultraman: Super Fighter Legend | Ultra Nyan | Gridman the Hyper Agent: boys invent great hero | The・Ultraman: Jackal vs. Ultraman | Kaiju Sakaba Kanpai! | Kaiju Girls | SSSS.GRIDMAN | ULTRAMAN (2019) | Kaiju Step Wandabada | SSSS.DYNAZENON | KAIJU DECODE | GRIDMAN×DYNAZENON
Outlaw Content Space Warriors 2000 | Project Ultraman | Ultraman The Animation | Ultraman: A Little Journey on Earth | Fun... English with Ultraman | Young Ultraman | Ultraman Big Transformation | Sinic Q | Red Jade | Dragon Force: So Long Ultraman | Dragon Force: Rise of Ultraman