Visible crew/equipment: When Julie says "It's probably just your nerves" then Heather replies "Nerves?!", above Heather's head you see a boom mic dip down into view. (00:12:25)
Visible crew/equipment: When on the phone to Chase, Heather says "He's had some sort of an ... episode" and as she says this a boom mic briefly dips into view, above her head. (Seen on DVD version) (00:23:40)
Visible crew/equipment: After Julie is killed, she falls to the floor, and if you look closely you can see the big black mattress she lands on. (Seen on DVD version.) (01:18:35)
Visible crew/equipment: You can the microphone dip into view whilst Dr. Heffner is whispering to her junior nurses, as you can hear Heather wrestling with the security officers. (Some DVD versions.) (01:14:00)
Visible crew/equipment: The boom mic dips into view once again whilst Heather is on the phone to Chase, as she says "...Like Freddy." (Seen on DVD version) (00:24:00)
Visible crew/equipment: In the playground scene, when Dylan jumps from the top of the rocket, it's an adult stunt double.
Visible crew/equipment: When Heather is leaving to go to her TV show, she and Julie walk out Heather's house. As they walk out and talk, you can see a boom mic dip down into view for a while. (Seen on DVD version) (00:13:25)
Answer: In the beginning he is just Robert Englund, but as the film goes on, the characters start becoming who they were in Nightmare 1, so he begins to become Freddy, and goes away so he doesn't harm anyone. The demon that looks like Freddy isn't Freddy, just a demon who takes the shape of the character Freddy.
Nick N.