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The invention can fire a green ray that makes everything it hits green and bouncy. It can also undo the transformation when put in reverse.
The invention was stolen by Night Ninja, who used it on his Sticky Splat to make a bouncy splat. When Romeo got it back, he used it to cause chaos around town until the PJ Masks stopped him and stole the invention to turn everything back to normal. They then send the invention to outer space by attaching it to the last remaining piece of the bouncy splat.