Viking ghosts (The Case of the Frightful Ferry)

The Viking ghosts were the disguises of Bjorn Bjornson and his two cooks.

Physical appearance
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Personality
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Scooby-Doo, Where Are You? (DC Comics)
Insert details here. (The Case of the Frightful Ferry)

Appearances

 * Scooby-Doo, Where Are You? (DC Comics)
 * #60(a). The Case of the Frightful Ferry