Martian Manhunter

The Martian Manhunter is an alien superhero who fights crime on Earth, sometimes as a member of the Justice League.

Physical appearance
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Personality
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Powers and abilities

 * Shapeshifting: He can morph his body to resemble Shaggy and Scooby.
 * Telepathy
 * Invisibility
 * Flight

Early life
He used to have an alien sidekick called Zooks.

Scooby-Doo! Team-Up
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Appearances

 * Scooby-Doo! Team-Up
 * #24. Out of This World