Mad Hatter

The Mad Hatter appeared in Scooby-Doo's nightmare about Alice in Wonderland.

The Richie Rich/Scooby-Doo Show
He seemed friendly and invited Shaggy Rogers, Scooby-Doo, and Scrappy-Doo to his tea party, but he ran off when the Queen of Hearts showed up.

Appearances

 * The Richie Rich/Scooby-Doo Show
 * Scooby In Wonderland