Ludi Lin visited his old high school to prepare for his role as Zack. He blended in successfully, even telling some students he was a transfer student and asking for a tour, until one of his old teachers walked up to him and said, "Ludi? You're still here?"
A linguist was hired to create the language of Eltar. Bryan Cranston and Bill Hader had trouble with the language, but Elizabeth Banks became fluent in it.
Bryan Cranston, who plays Zordon in the film, previously voiced the monsters Twin Man and Snizzard in Power Rangers (1993).
To confirm her casting announcement on Twitter, Elizabeth Banks said "After 10,000 years I'm free, it's time to conquer earth, time to play Rita Repulsa in the new Power Rangers Movie!" (In reference to the character's line in the opening credits of Power Rangers (1993).)