The Ghostbusturtles mistook Peter Venkman for a demon or ghost and confronted in a park in Lower Zoo Amsterdam. They decided to make a final determination after the blasted him. Before Peter could react, they opened fire with their throwers. The Ghostbusturtles wrangled Peter in mid-air then Dan restrained him in Incapacitating Gel. Harold and Bill later opened fire on Michelangelo in the basement but the former realized the lab was getting wrecked as their target acrobatically dodged the streams.
- On page 2 of TMNT/Ghostbusters Volume 2 Issue #3, the manner in which Peter is captured with slime mirrors how the Peoplebusters capture humans in The Real Ghostbusters episode "Flip Side".
- Harold found the Proton Pack to be less advanced than the Ghostbusturtles' ones.
- Harold (2017). IDW Comics- "Teenage Mutant Ninja Turtles/Ghostbusters Volume 2 Issue #4" (2017) (Comic p.10). Harold says: "Less advanced than ours maybe, but unmistakeable."