Elmo (Scooby-Doo! Mystery Incorporated)

 Elmo  is in a teen mystery-solving group, with Funky Phantom as their mascot. He was in Scooby-Doo's feverish dream.

Physical appearance
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Season one
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Appearances

 * Scooby-Doo! Mystery Incorporated
 * 114. Mystery Solvers Club State Finals (dream)