To defeat the Ecto-Clones once and for all, the Ghostbusters, past and present, worked all night on a new Fusion Blast Adapter. The use of the adapters to induce an ionic fusion had its dangers, namely a releasing enough energy to create a crater the size of Death Valley.  The Ghostbusters successfully fused the eight Ecto-Clones and trapped it. They soon used the adapters against S.I.D.N.E.E., but were ineffective.
The Adapters looked like a special nozzle attachment that fits onto the tip of the Particle Thrower.
- ↑ Ray Stantz (1997). Extreme Ghostbusters- Back in the Saddle, Part 2 (1997) (DVD ts. 10:24-10:29). Sony Pictures Home Entertainment. Ray says: "Last time, we didn't use the Fusion Adapters. We've got more firepower now!"
- ↑ Ray Stantz (1997). Extreme Ghostbusters- Back in the Saddle, Part 1 (1997) (DVD ts. 19:03-19:19). Sony Pictures Home Entertainment. Ray says: "Uh, before we proceed, it should be mentioned that any kind of ionic fusion carries a huge risk factor. If too much energy is released during the process...well, this area we're standing on can end up a crater the size of Death Valley."