Phibes detector

The Phibes detector is an invention of Robi.

Season two
It is supposed to detect and attack Dr. Phineus Phibes, In fact, it thinks everyone else is Phibes, except for the real Phibes. (There's A Doctor In The House)

Appearances

 * Shaggy & Scooby-Doo Get A Clue!
 * There's A Doctor In The House