Jason Lee Scott, Zack Taylor, Kimberly Ann Hart, Trini Kwan, Billy Cranston, Tommy Oliver, Rocky DeSantos, Aisha Campbell, Adam Park, Katherine Hillard, Tanya Sloan, Farkas Bulkmeier and Eugene Skullovitch are born
Andros, Karone, and Zhane are born on KO-35.
Mike Corbett is born.
TJ Johnson, Ashley Hammond, Cassie Chan, and Carlos Vallerte are born
Leo Corbett, Kai Chen, Damon Henderson, Maya, and Kendrix Morgan are born
Ryan Mitchell is born
Cole Evans is born.
Wes Collins and Eric Meyers are born.
Dana Michelle is born
Cam is born.
Taylor Earhardt, Max Cooper, and Danny Delgado are born
Shane Clarke, Dustin Brooks, Hunter Bradley are born.
Alyssa Enrilé is born.
Nick Russell is born.
Justin Stewart is born.
Tori Hanson and Blake Bradly are born.
Bowen is lost and brought to the human world
Leanbow is cursed
Niella is killed
Daggerron is sealed in a cave.
Calindor betrays his friends for the dark side
Conner McKnight, Ethan James, Kira Ford and Trent Fernandez are born
Vida Rocca, Xander Bly, and Chip Thorn are born
Madison Rocca is born.
Kendall Morgan is born.
Casey Rhodes and Lily Chilman are born.
Theo Martin is born.
Jason Lee Scott becomes the first Red Ranger, with the power of the Tyrannosaurus.
Zack Taylor becomes the first Black Ranger, with the power of the Mastodon.
Billy Cranston becomes the first Blue Ranger, with the power of the Triceratops.
Trini Kwan becomes the first Yellow Ranger, with the power of the Sabertooth Tiger.
Kimberly Hart becomes the first Pink Ranger, with the power of the Pterodactyl.
Later: Tommy Oliver becomes the first Green Ranger, with the power of the Dragonzord.
Tommy loses his Green Ranger powers and becomes the White Ranger
Rocky replaces Jason as the Red Ranger.
Adam replaces Zack as the Black Ranger.
Aisha replaces Trini as the Yellow Ranger.
Katherine Hillard replaces Kimberly as Pink Ranger
Tommy becomes the Red Zeo Ranger.
Rocky becomes Blue the Zeo Ranger.
Adam becomes Green the Zeo Ranger.
Tanya Sloan replaces Aisha and becomes the Yellow Zeo Ranger.
Katherine becomes the Pink Zeo Ranger.
The Gold Ranger is revealed to be Trey of Triforia.
Jason becomes the Gold Ranger temporarily
The survivors are forced to flee off-world. Zhane, the Silver Space Ranger is nearly killed and is placed in a cryogenic state to keep him alive.
Tommy becomes the Red Turbo Ranger.
Adam becomes the Green Turbo Ranger.
Kat becomes the Pink Turbo Ranger.
Tanya becomes the Yellow Turbo Ranger.
Justin Stewart replaces an injured Rocky as the Blue Turbo Ranger.
Blue Senturion becomes the 'sixth' Ranger
T.J. Johnson replaces Tommy as the Red Turbo Ranger.
Carlos Vallerte replaces Adam as the Green Turbo Ranger.
Ashley Hammond replaces Tanya as the Yellow Turbo Ranger.
Cassie Chan replaces Katherine as the Pink Turbo Ranger.
Phantom Ranger becomes the 'sixth' Ranger
Powers are destoryed. Rangers (minus Justin) go to Space.
Tyler Navarro, Shelby Watkins, and Chase Randall are born.
Andros is the Red Space Ranger.
T.J. Johnson becomes the Blue Space Ranger.
Carlos Vallerte becomes the Black Space Ranger.
Ashley Hammond becomes the Yellow Space Ranger.
Cassie Chan becomes the Pink Space Ranger.
Zhane joins the others as the Silver Space Ranger.
Psycho Rangers are created
Karone is (eventually) rescued
Zordon is destoryed
Riley Griffin is born
Leo Corbett becomes the Red Galaxy Ranger.
Damon Henderson becomes the Green Galaxy Ranger.
Kai Chen becomes the Blue Galaxy Ranger.
Maya becomes the Yellow Galaxy Ranger.
Kendrix Morgan becomes the Pink Galaxy Ranger.
The Magna Defender (later Mike) becomes the sixth Ranger
Karone becomes the Pink Galaxy Ranger following Kendrix's death.
Kendrix is revived
Carter Grayson, the Red Lightspeed Rescue Ranger, was a fire fighter in the local fire department.
Chad Lee, the Blue Lightspeed Rescue Ranger, worked as a lifeguard and marine animal trainer at a local marine amusement park.
Joel Rawlings, the Green Lightspeed Rescue Ranger, was a stunt pilot.
Kelsey Winslow, the Yellow Lightspeed Rescue Ranger, was an extreme sports athlete.
Dana Mitchell, the Pink Lightspeed Rescue Ranger, was a paramedic and practiced medical arts.
Ryan Mitchell, joins as the Titanium Lightspeed Rescue Ranger.
Jen Scotts the Pink Time Force Ranger, leader of the team.
Lucas Kendall the Blue Time Force Ranger, a Casanova.
Trip the Green Time Force Ranger, a psychic from Xybria.
Katie Walker the Yellow Time Force Ranger, enhanced with superhuman strength.
Wesley Collins, the Red Time Force Ranger of the year 2001 following Alex's 'death'
Eric Meyers becomes the Quantum Ranger.
Eric and Wes are the only Rangers that remain by the end of the season
Master Mao entrusts Dominic with the Control Dagger, which will unlock the Rhino Nexus
Taylor Earhardt - a as-tough-as-nails fighter pilot, becomes the Yellow Wild Force Ranger, with the power of the Soaring Eagle.
Danny Delgado - a soft spoken florist, becomes the Black Wild Force Ranger, with the power of the Iron Bison.
Max Cooper - a wisecracking youngster, becomes the Blue Wild Force Ranger, with the power of the Surging Shark.
Alyssa Enrile- a kind hearted college student, becomes the White Wild Force Ranger, with the power of the Noble Tiger.
Cole Evans - a young man raised in the wilderness in search of his true origin, becomes the Red Wild Force Ranger, with the power of the Blazing Lion.
Merrick Baliton becomes the Lunar Wolf Ranger
After the destruction of the Machine Empire, surviving generals Tezzla, Gerrok, Steelon, and Automon --along with general Venjix-- seek revenge by stealing Serpentera, wich has been hidden in the Moon. The former red rangers Jason Lee Scott, Aurico, Tommy Oliver, T. J. Johnson, Andros, Leo Corbett, Carter Grayson, Wesley Collins and Eric Myers team up with Cole Evans to form a ten-red-rangers team and defeat the remainings of the Machine Empire.
Shane Clarke becomes the Red Wind Ranger, he wields the power of air.
Dustin Brooks becomes the Yellow Wind Ranger, he wields the power of earth.
Tori Hanson becomes the Blue Wind Ranger, she wields the power of water.
Blake Bradley joins as the Navy Thunder Ranger.
Hunter Bradley joins as the Crimson Thunder Ranger
Emily Bradley joins as the White Thunder Range-shot
Cameron Watanabe becomes the Green Samurai Ranger.
Bridge Carson is born.
Conner McKnight becomes the Red Dino Thunder Ranger, with the power of the Tyrannosaurus, and has Tyranno Super Speed.
Ethan James becomes the Blue Dino Thunder Ranger, with the power of the Triceratops, and is enhanced with Tricera Armored Skin.
Kira Ford becomes the Yellow Dino Thunder Ranger, with the power of the Pterodactyl, and is enhanced with Ptera Sonic Scream.
Tommy Oliver becomes the Black Dino Thunder Ranger, with the ability to become invisible.
Trent Fernandez joins the group as the White Dino Thunder Ranger, with the ability to camouflage and super speed.
Schuyler Tate is born
Nick Russell, later revealed to be Bowen,son of Leanbow and Udonna, becomes the Red Mystic Ranger, with the element of fire and the power of the Phoenix.
Xander Bly becomes the Green Mystic Ranger, with the element of earth and the power of the Minotaur.
Charlie Thorn becomes the Yellow Mystic Ranger, with the element of thunder and the power of the Garuda.
Madison Rocca becomes the Blue Mystic Ranger, with the element of water and the power of the Mermaid.
Vida Rocca becomes the Pink Mystic Ranger, with the element of wind and the power of the Sprite.
Daggeron becomes the Solaris Knight.
Leanbow becomes the Wolf Warrior
Claire becomes the Gatekeeper
Mack Hartford - Operation Overdrive Red Ranger
Will Aston - Operation Overdrive Black Ranger
Dax Lo - Operation Overdrive Blue Ranger
Ronny Robinson - Operation Overdrive Yellow Ranger
Rose Ortiz - Operation Overdrive Pink Ranger
Tyzonn joins as the Mercury Ranger
Casey Rhodes becomes the Jungle Fury Red Ranger, with the spirit of the tiger.
Theo James becomes the Jungle Fury Blue Ranger, with the spirit of the jaguar.
Lily Chilman becomes the Jungle Fury Yellow Ranger, with the spirit of the cheetah.
RJ becomes the Jungle Fury Wolf Ranger, with the spirit of the Wolf.
Dominic becomes the Jungle Fury Rhino Ranger, with the spirit of the Rhino.
Troy Burrows becomes the Red Megaranger
Emma Goodall becomes the Pink Megaranger
Jake Holling becomes the Black Megaranger
Gia Moran becomes the Yellow Megaranger
Noah Carver becomes the Blue Megaranger
Robo Knight joins the team and later dies??
Orion joins as the Silver Megaforce Ranger