Despite playing three nights, the audience is filled with the same people in the same clothes.
When Melissa is in Abner Devereaux's workshop, looking for her fiancé, an animatronic barbershop quartet is in various stages of assembly. Far left is just a head. They are activated and sing a bit, panning to the right. At the start, the head on the table is facing left. When the camera pans back, the head is facing the camera.
The three punks making trouble in the park are all captured in the haunted house. They reappear in Devereaux's laboratory, dressed in colonial attire.
When Gene sets the mummy on fire, the flames apparently spread much faster than intended. The stunt man playing the mummy says "Shit!" as he stumbles backwards. It's a made-for-TV movie aimed at children, so the language was not intentional.
In several scenes, Ace Frehley's black male stunt double is clearly visible from the front. In some fight scenes Ace goes from white to black and vice-versa.
When Star Child finds the electrode on Sam's neck, a close-up of Paul's hand clearly shows a wedding ring mark.
When the camera pans the audience, one guy is clearly flipping the bird with both hands.
During the final concert when the robot KISS members are singing "Rip and Destroy," and the crowd is booing them, one spectator can briefly be seen making a gesture with the middle finger. This had apparently made it past the censors because in 1978, it never would have been approved for network television.
In various parts of the movie, Gene uses a lion's roar. While it was meant to give Gene a more intimidating presence, the lion's roar would have been more appropriate for Peter, as Peter used the Catman persona in the group.
At the 4:15 minute mark (from the Kissology Vol.2 DVD collection) a child wearing Gene Simmons' makeup looks directly into the camera.
When the cloned Gene Simmons throws the guards, wires are clearly visible.
Wires visible on the talisman case when the band levitates it.
During the concert footage at Magic Mountain, a rear overhead shot of the stage includes visuals of camera crew and the band's manager at the time, Bill Aucoin, at stage left.