Following a disappointing opening weekend of only $1.3 million, the worst opening ever for a major studio film in wide release (2,000+ theaters), Universal pulled the film after only two weeks. Before it was withdrawn, it had grossed just $2.2 million against an estimated budget of $5 million.
The working title for this film was "Pink Pony". This is because Hasbro was interested in Sony Pictures co-financing this movie along with My Little Pony: The Movie (2017). Sony was more interested in the latter over the former, due to its larger fan base, so they dropped Jem. Unfortunately for Sony, the negotiations for the My Little Pony movie never held up.
The Astral recording studio is named after Astral from the animated series. Astral was slated to appear in more episodes - a prototype doll of the character was even created - but Hasbro ultimately pulled the plug.
Scooter Braun was brought in with only two weeks to write a whole new soundtrack as there were licensing issues with the original animated series that could not be resolved in such a short period of time before production began.
Australian model Doug Gardiner was a huge Jem (1985) fan growing up and traveled all the way from Oz to LA to be an extra in the film, he is standing next to Molly Ringwald during the final concert for the song "I'm Still Here".