1. The show is the American version of a Japanese Super Sentai series called Kyōryū Sentai Zyuranger (Dinosaur Team Beast Ranger).
2. In the original Japanese footage, the Yellow Ranger was male.
3. Walter Jones had originally been cast as Billy (The Blue Ranger) and David Yost was originally cast as Jason (The Red Ranger).
4. Austin St. John (Jason), Walter Jones (Zack), Thuy Trang (Trini) and Jason David Frank (Tommy) were all martial artists before being cast in the show.
5. Jason David Frank was never meant to be a main character.
6. Richard Steven Horvitz (Alpha 5) is the only actor to appear in all 155 episodes of the series.
7. The work schedule for the show ran Monday through Friday from 6:30 AM to 6:30 PM for sixteen weeks.
The Ranger actors worked seven days a week, coming in on the weekends for dialog recording.
8. The unaired pilot of the first episode was pretty different from the series.
9. Allegedly, the pyrotechnics used in Billy's brain-switching machine occasionally would set both Amy Jo Johnson and David Yost on fire while filming.
10. There was an alternate ending to the Season 1 finale in case the show was not renewed.
11. In the Halloween episode "Trick or Treat", Skull has the numbers "24601" tattooed on his chest as a throwback to Jean Valjean's prison number in Les Miserables.
12. Because of complaints from parents that the Power Rangers were too violent, the Rangers’ Blade Blasters were holstered in their belts most of Season 2.
13. Austin St. John, Thuy Trang, and Walter Jones left the show in the middle of Season 2 because of rumored pay issues.
Saban used old footage for their unmorphed scenes voiced by other actors until they were replaced by Steve Cardenas, Karan Ashley and Johnny Yong Bosch.
14. Lord Zedd is Jewish.
15. Billy Cranston (The Blue Ranger) was named after Bryan Cranston, who voiced two villians (Snizard and Twinman) in the Power Rangers universe.
16. Kimberly's last name is Hart and her birthday is on February 14th.
17. Austin St. John became very protective of his private life because he once literally had the clothes ripped off his back by fans when he was out shopping.
18. Walter Jones is missing the middle finger on his left hand.
19. Thuy Trang passed away September 3, 2001.
Thuy, Angela Rockwood (from Push Girls), and one of Angela's bridesmaids were in a car accident in San Francisco, CA, which killed Thuy and left Angela paralyzed.
20. They shut down an eight mile stretch of an LA freeway when they hosted a D.A.R.E. event at Universal Studios Hollywood in 1994.
35,000 people showed up, breaking a 30-year attendance record for the park.