The subtitle of the film is "Through the Portal of Time," but the plot doesn't involve travel through a time portal. The characters travel through a portal to a parallel universe where the 1991 Earth exists.
Jim Wynorski said in an interview that producer/director Sylvio Tabet tried to rip him off after Wynorski worked on the screenplay, but he ended up having his revenge a few years later: "Tabet lured me into the sequel with the prospect of writing and directing," he explained. "He'd made the first film, but then waited close to seven years to make the second. Along with my writing partner, R.J. Robertson, we wrote him a helluva good screenplay. Then at the last moment, he pulls the rug out from under me and says he's directing it himself. And then tops it off by threatening to take our writing credits off the picture. I took the bastard straight to court. He hired big-time attorneys to stall paying out the final script installments. I hated his guts. But I got the last laugh when Republic Pictures picked up the show. They wanted a picture totally clean of legal entanglements. So they came to me to make a deal and I held them up but good. Cleaned up. I still remember Tabet's pained face when I told him what it would take to get me to sign off. Even my own lawyer whined!"
When Dar is riding through L.A. in the convertible they pass the Pantages movie theater, which is showing "Beastmaster 2 Through the Portal of Time". That is the name of this movie.
Its never explained why Rhu the tiger was changed from a black tiger in the previous film to a striped tiger in this one.
James Avery (Lt. Coberly) also starred on "The Fresh Prince Of Bel-Air" sitcom in which John Amos (Seth in "The Beastmaster") guest-starred as Fred Wilkes and both actors appeared in several episodes alongside each other.