It is implied the Containment Unit has P.K.E. dampening properties.
The voice actors were recorded on August 25, 1986.
Slimer doesn't appear in this episode.
Willie Bradford mentioned "Inspector Gadget". "Inspector Gadget" was an animated series also produced by DIC. Frank Welker also voiced Willie in this episode. Welker voiced Dr. Claw and Brain in "Inspector Gadget".
In the final draft of the script, Willie originally mentioned Smurfs instead of Inspector Gadget.