Note: Ohranger originally took place in 1999, but it was later retconned to take place during 1995. Pre-series
- 600 million years ago: On Earth, the ancient civilization of Pangaea creates a race of sentient machines that ultimately rebel against them and attack both them and the Dorin race living alongside them. Riki, a young hero empowered by the Super-Power of the age, defeats and destroys all but one of the Machine Beasts, which escapes off the planet in hopes of rebuilding its potential. Fearful of its return, Riki and a Dorin are sent into another dimension to preserve them until they are needed again. (Ep. 26)
- Unknown Time: Having founded the Machine Empire Baranoia during his exile from the planet of his creation, Bacchusfund became a campaign of conquering other planets while his wife's niece Maltiwa is placed in suspended animation until she is needed. Bacchusfund also dealt with an usurper named Bomber the Great, who escaped and traveled the universe since.
- 1968: Shouhei Yokkaichi/OhGreen is born.
- 1970: Goro Hoshino/OhRed is born.
- 1973: Juri Nijou/OhYellow is born.
- 1974: Yuuji Mita/OhBlue is born.
- 1975:' Momo Maruo/OhPink is born.
- 1984: Exiled from the Machine Empire Baranoia, Bara Nightmare arrives on Earth where he begins abducting girls that he places in suspended animation while subjecting them to a virtual reality for his own desires. (Ep. 32)
- 1988: The town of Yumeno begin work on a "Kendama Robo" in order to protect themselves. (Ep. 21)
- 1990: U.A.O.H.'s Chief Counsellor Naoyuki Miura is caught in a car crash with Lieutenant Commander Endoh and his daughter, Mitsuko; while attempting to save both, Endoh sacrifices himself so that his daughter can be saved and raised by Miura. (Ep. 6)
- 1992: A boy discovers a small piece of an ancient slab which ultimately leads to the rediscovery of the Pangaea civilization; the ruins and the completed slab will ultimately be handed over to Chief Counsellor Naoyuki Miura, leading to the creation of Superpower in the modern age. (Ep. 3)
- 1993:
- Having founded the Machine Empire Baranoia during his exile from the planet of his creation, Bacchusfund returned to the Milky Way to begin preparations to conquer Earth.
- Shigeru, the son of "genius" Seiichi Kuroda, is killed when he is hit by a car; his father ultimately builds a robot body for him and places all of his child's memories within it to continue acting like nothing had changed. (Ep. 18)
- When a photo of Baranoia invasion scouts are taken, United Airforce pilot Shunpei Kirino decides to activate Red Puncher, a mecha in development, to fight them; but due to the recklessness and the methods of Super-Power not being fully realized, the mecha runs out of control, killing its pilot before becoming buried in rubble near the U.A. base. (Ep. 19)
- 1994: A boy named Satoru retrieves a lost memory chip for Red Puncher (required to combine it with Ohranger Robo) near the grave site of Shunpei Kirino, hoping to use it to finish his father's talking computer. (Ep. 22)
Series1995
- Setting up a base on the Earth's Moon, the Machine Empire Baranoia begins an invasion of Earth, forcing nations to give in to their demands or watch their cities be destroyed every 24 hours. After previously destroying New York and Paris, Tokyo becomes under attack by Baranoia, forcing the United Airforce into action and the set-up of the Ohranger squadron. When the four future Ohranger are grounded by Baranoia, their leader, Goro Hoshino, comes to their rescue with new Super-Power technology as OhRed. OhRed defeats Bara Drill. (Ep. 1)
- United Aiforce soldiers Shouhei Yokkaichi, Yuji Mita, Juri Nijou and Momo Maruo are engrained with Super-Power by Chief Counsellor Naoyuki Miura, the leader of the United Airforce's "Overtech Hardware" division, completing the Ohranger squadron. The Ohrangers defeat Bara Saucer. (Ep. 2)
- The Ohrangers defeat Bara Vanish. (Ep. 3)
- The Ohrangers defeat Bara Crusher. (Ep. 4)
- The Ohrangers defeat Bara Cactus 1 & 2. (Ep. 5)
- Hearing about U.A.O.H.'s development of special machines to fight them, Baranoia sends down Machine Beast Bara Brain, who manipulates Chief Counselor Miura into becoming his captive while creating the giant Bara Separate to destroy the city and hold the Ohranger down. The Ohranger ultimately finish the machines, forming into Ohranger Robo to destroy Bara Separate and likewise killing Bara Brain in the process, saving their leader. (Ep. 6-7)
- Emperor Bacchusfund upgrades Butlers Acha & Kocha to become able to inject their Machine Beasts with a means to grow giant-size to fight against Ohranger Robo. The Ohrangers defeat Bara Missiler. (Ep. 8)
- The Ohrangers defeat Steam Punk. (The Movie)
- The Ohrangers defeat Bara Darts. (Ep. 9)
- The Ohrangers defeat Bara Hacker. (Ep. 10)
- The Ohrangers defeat Bara Printer. (Ep. 11)
- The Ohrangers defeat Bara Baby. (Ep. 12)
- The Ohrangers defeat Bara Magma. (Ep. 13)
- The Ohrangers defeat Bara Pinokiller. (Ep. 14)
- The Ohrangers defeat Bara Revenger. (Ep. 15)
- The Ohrangers defeat Bara Devil. (Ep. 16)
- The Ohrangers defeat Bara Vacuum. (Ep. 17)
- The Ohrangers defeat Bara Ivy. (Ep. 18)
- After Bara Builder, a powerful adaptable Machine Beast, defeats Ohranger Robo, Gorou discovers Red Puncher, the mecha predecessor developed by U.A.O.H.; despite having initial problems in controlling it, a vision of its former pilot, Lieutenant Kirino, helping him and its alignment with U.A.O.H.'s Super-Power allows for him to tame it and use the mecha to defeat Bara Builder. (Ep. 19)
- The Ohrangers defeat Bara Boxer. (Ep. 20)
- The Ohrangers defeat Bara Kendama. (Ep. 21)
- After regaining the mechanics associated with combining both Ohranger Robo and Red Puncher, the Ohranger form Buster Ohranger Robo to defeat the tough Bara Madillo. (Ep. 22)
- The Ohrangers defeat Bara Clothes. (Ep. 23)
- The Ohrangers defeat Bara Kakka. (Ep. 24)
- Chief Counselor Miura grants the Ohranger the Ole Bazooka to fight and defeat the tricky Bara Hungry after wearing it down. The Ohrangers defeat Bara Hungry. (Ep. 25)
- The massive pyramid containing Riki (also known as the Pangaea hero KingRanger) as well as the Super-Power manipulating being known as Dorin departs from its space-time warp in order to assist the Ohranger with Baranoia. The Ohrangers defeat Bara Goblin and Bara King (Ep. 26-28)
- The Ohrangers defeat Bara Tarantula. (Ep. 29)
- The Ohrangers defeat Bara Gūsuka. (Ep. 30)
- The Ohrangers defeat Bara Faucet. (Ep. 31)
- The Ohrangers defeat Bara Nightmare. (Ep. 32)
- Bacchusfund secretly builds a laboratory on Earth to create a special magma coating to further empower multiple rebuilt giant Machine Beasts. Using special Blocker Robo developed for their fleet, the Ohranger use a Trojan horse attack to destroy the base and the redeveloped Machine Beasts while likewise appearing to destroy Bacchusfund. Bacchusfund releases the full extent of his power and summons his sword to Earth in hopes of finishing off the Ohranger himself. After mastering the ability to join their hearts as one through a sword attack, the U.A.O.H. soldiers use their Blocker Robo to become Oh Blocker and perform their Twin Blokken Crash, destroying Baranoia's emperor. (Ep. 33-34
- After hearing about the destruction of Baccus Wrath, Baranoia wild-card Bomber the Great comes to try and lay claim to the invasive force. (Ep. 35)
- To deal with the potent powers of the Machine Beast Bara Skunk, Chief Counselor Miura develops and summons Tackle Boy to be used by the Ohranger. (Ep. 36)
- Gunmajin arrives on Earth. The Ohrangers defeat Bara Police (Eps. 37-38)
- The Ohrangers team up with the Kakurangers to defeat Bara Gear and Yokai Onbu-Obake. (Ohranger vs. Kakuranger) note
- Bomber the Great cements his right as emperor by killing Buldont in a duel per Baranoian law, sending his head and Hysterrier off on a rocket. He then proceeds to use humanity's greed to power Bara Gold, but the plan falls apart. At the same time, Hysterrier ends up on a distant planet where Bacchushund's head ended up and he uses his remaining life force to revive Buldont in a new form. Hysterrier uses her own life force to summon Maltiwa to help the reborn Kaiser Buldont retake his birthright from the usurper, weakening her in the process. Bomber is killed off and Buldont becomes the new emperor with Maltiwa as empress. (Ep. 39-41)
- The Ohrangers defeat Bara Hunter. (Ep. 42)
- The Ohrangers defeat Bara Fraud. (Ep. 43)
- Gunmazin returns to Earth after his presumptive death to assist the Ohranger once again against Buldont and Multiwa. The Ohrangers defeat Bara Guard. (Ep. 44)
- Buldont sends down the Machine Beast Bara Micron, whose distribution of Dark Particles causes the machines of Earth to lose control and forces the Ohranger to lose control of both Oh Blocker and Red Puncher. In the midst of the chaos, Baranoia restarts their invasion and use information they obtain from the mecha to find and destroy U.A.O.H.'s secret headquarters in the Japan Alps (but not before Chief Miura has the Ohranger Robo and Tackle Boy moved to a secure location). (Ep. 45)
- With the usage of Bara Micron's Dark Particles, the Ohranger and later Riki lose control of their Super-Power. Without any options left, Dorin releases a crystal from the Dorin Dimension which she uses to attempt to heal the Super-Power while destroying Bara Micron. She then sends the Ohranger into King Pyramider in order to send them into space to discover the source of Super-Power as Buldont appears to kill her. With her "death", the natural balance on Earth collapses as the machine empire completes it's conquest of the planet. (Ep. 46)
- After temporarily being thrown into a dark dimension by Buldont, the Ohranger arrive in the Dorin Dimension where the Dorin of Earth is discovered to be alive but weakened and needing rest to restore herself. After discovering that the key to reviving their Super-Power is within themselves, the Ohranger leave to return to Earth. The Ohranger return to Earth with six month passing since they've left, with Earth under Baranoia's subjugation and Buldont and Multiwa establishing a palace on Earth where they raise a child. (Ep. 47)
- After discovering Chief Counselor Miura and Riki leading a U.A.O.H.-based rebellion and believing in the words of the Dorin, they restore their own Super-Power and become Ohranger once again, allowing for them to defeat and ultimately destroy the Baranoia emperor and empress with all of their mecha. Storming the Earth Baranoia palace, the Ohranger are confronted by Hysteria who asks them to spare Buldont & Multiwa's child. When agreeing to do so, the dowager empress blows herself up, bringing an end to the Baranoia Empire. Gunmazin decides to adopt the Baranoia baby to raise it well while likewise forcing Butlers Acha & Kocha under him to make sure they stay out of trouble. Dorin returns from her restoration and is reunited with Riki, allowing for them and the U.A.O.H. warriors to finally find peace for themselves and their planet.
Post-series
- 1996: The Ohrangers fight with the Carrangers to defeat Bara Mobile, the last warrior of Baranoia. (Carranger vs. Ohranger)
- 2001: As one of the first 24 Super Sentai, the Ohrangers provide their support in the Gaorangers fight against Lost Highness Duke Rakushaasa. (Gaoranger vs. Super Sentai)
- 2006: As one of the first 30 Super Sentai, Oh Red's Red Warrior spirit is inherited by AkaRed. (Boukenger vs. Super Sentai)
- 2011: The Ohrangers, among the first 34 Super Sentai, oppose an invasion of Earth by the Space Empire Zangyack in what becomes known the Legend War, ending with all Super Sentai sacrificing their power to destroy the invasion fleet. Dispersed throughout the universe, the powers ultimately resurface as Ranger Keys whilst the former Super Sentai disband. (Kaizoku Sentai Gokaiger ep. 1, 199 Hero Great Battle)
- 2012: A month following the defeat of the second Zangyack invasion, the powers of the 34 Super Sentai are returned to them by the Gokaigers. (Gokaiger ep. 51)
- 2012: The Ohrangers, among the first 34 Super Sentai, are apparently defeated by Tsukasa Kadoya (Kamen Rider Decade), Great Leader of Dai-Shocker which seeks to wipe out the Super Sentai, opposing Dai-Zangyack led by Emperor (formerly Captain) Marvelous (Gokai Red) who are hunting the Kamen Riders. Infact, all the presumed deceased Sentai and Riders had been transported to the dimensional rift, from which they emerge to defeat the new Shocker-Zangyack Alliance. (Super Hero Taisen)
- 2017: The Ohrangers, among the first 38 Super Sentai, provide their power for the Ninningers and Zyuohgers to defeat Gillmarda. (Daiohger vs. Ninninger)
- 2019: The Ohrangers are embroiled in the Super Sentai Strongest Battle. (Super Sentai Strongest Battle)
- 2021: The Ohrangers, among the first 44 Super Sentai, are embroiled in the Zenkaigers' conflict with the Kikaitopia Dynasty Tojitendo. (Kikai Sentai Zenkaiger)
Non-Canon
- The Ohrangers fight with the Kakurangers to defeat Bara Gear and the Yokai Onbu-Obake. (Ohranger vs. Kakuranger)
