Pre-Series
- 1951: Daisuke Yamamoto, AKA "Amazon", is born.
- A short while after Daisuke's birth: A plane which Daisuke Yamamoto and his family boarded crashes in the Amazon Rainforest, leaving the baby as the only survives. Tribe members in the forest adopt the baby and give him the name "Amazon".
- Golgos, the leader of the Gedon Organization, arrives at Amazon's village in search of the GiGi Armlet, one of two armlets which can give their user vast powers, and slaughters all of it's inhabitants other than Amazon and Edler Bago. The Edler entrusts the GiGi Armlent to Amazon, converts him into Kamen Rider Amazon and sends him to Japan. Amazon defeats Gedon's first monster, the Spider Beastman. (Ep. 1)
- Amazon defeats the Vampire Bat Beastman. (Ep. 2)
- Amazon defeats the Mantis Beastman. (Ep. 3)
- Amazon defeats the Large Centipede Beastman. (Ep. 4)
- Amazon befriends the Mogura Beastman, a Beastman who was almost executed by Gedon for failing to kill Amazon. (Ep. 5)
- Amazon defeats the Porcupine Beastman. (Ep. 6)
- Amazon defeats the Snake Beastman. (Ep. 7)
- Amazon defeats the Crocodile Beastman. (Ep. 8)
- Amazon defeats the Crab Beastman. (Ep. 9)
- Amazon defeats the Black Cat Beastman. (Ep. 10)
- Amazon defeats the Snail Beastman. (Ep. 11)
- Amazon defeats the Ant Beastman. (Ep. 12)
- Amazon defeats the Dobsonfly Beastman. (Ep. 13)
- Amazon defeats the Dobsonfly Beastman Advanced and Ten-Faced Demon Gorgos, finally destroying the Gedon Empire for good. However, the Garander Empire arrives in their place, with it's leader, Emperor Zero, taking the GaGa Armlet.(Ep. 14)
- Amazon defeats the Bee Beastman. (Ep. 15)
- Amazon defeats the Diving Beetle Beastman. (Ep. 16)
- Amazon defeats the Toad Beastman. (Ep. 17)
- Amazon defeats the Tiger Beetle Beastman. (Ep. 18)
- Amazon defeats the Owl Beastman. (Ep. 19)
- The Mushroom Beastman poison Mogura Beastman, which dies shortly after. Amazon defeats the Mushroom Beastman and builds a Memorial in honor of Mogura. (Ep. 20)
- Amazon defeats the Sea Anemone Beastman. (Ep. 21)
- Amazon defeats the Japanese Dwarf Flying Squirrel Beastman. (Ep. 22)
- Amazon defeats the Salamander Beastman. (Ep. 23)
- Amazon defeats the decoy "Great Emperor Zero" and the Ruler, the true Great Emperor Zero, finally destroying the Garander Empire for good. (Ep. 24)
- 1975: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider Stronger in defeating the Delzer Army, and later it's true leader, General Great Darkness. (Stronger Ep. 39, All Together Seven Kamen Riders)
- 1980: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider: Skyrider in defeating Galaxy King. Both later assist him on other occasions. (Eight Riders Vs Galaxy King, Kamen Rider Skyrider)
- 1981: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider Super-1 in fighting some of the Dogma Kingdom's monsters. (Kamen Rider Super-1)
- 1984: Kamen Rider Amazon, alongside the other past riders, assist the new Kamen Rider ZX in defeating the Badam Empire. (Birth of the Tenth! Gather All Kamen Riders!!)
- 1989: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider BLACK RX in destroying the Crisis Empire. (Black RX Ep. 41-47)
- 2009: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider Decade in defeating an alternate reality counterpart of Shadow Moon. (All Riders vs. Dai-Shocker)
- 2011:
- Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider OOO in defeating the revived Great Leader of Gel-Shocker. (OOO, Den-O, All Riders: Let's Go Kamen Riders)
- Kamen Rider Amazon, alongside a few other past riders, assist Kamen Rider Fourze and Kamen Rider OOO in defeating Kamen Rider Poseidon and Super Galaxy King. (Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max)
- 2012: Kamen Rider Amazon, among the rest of the Kamen Riders, are apparently defeated by Dai-Zangyack led by Emperor (formerly Captain) Marvelous (Gokai Red) who is hunting the Kamen Riders, while 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. Infact, all the presumed deceased Sentai and Riders had been transported to a dimensional rift, from which they emerge to defeat the new Shocker-Zangyack Alliance. (Kamen Rider × Super Sentai: Super Hero Taisen)
- 2014: Kamen Rider Amazon, along with other past riders and with the help of Kyoryu Red and the ToQgers, finally defeat the Badam Empire. (Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai)
- 2015: Kamen Rider Amazon, alongside the other past riders, assist Kamen Rider Drive in defeating the revived Great Leader of Gel-Shocker. (Super Hero Taisen GP: Kamen Rider #3)
- 2021: Kamen Rider Amazon, along with other past riders and Sentai warriors, assist Kamen Rider Saber's riders and Kikai Sentai Zenkaiger in defeating Asmodeus. (Kamen Rider Saber + Kikai Sentai Zenkaiger Super Hero Senki)
