Instant Monster Ray

The Instant Monster Ray is a device invented by the mad director Von Scareheim to turn teenagers into real monsters for his movie.

Physical appearance
It resembles a blue/gray flashlight with a red button that shoots out an orange beam.

Scooby-Doo and Scrappy-Doo (second series)
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Appearances

 * Scooby-Doo and Scrappy-Doo
 * 302(b). Movie Monster Menace