|This needs a stretch.|
Beauregard's Ghost was the disguise of T.J. Buzby.
He wore a Confederate uniform and had glowing yellow eyes.
He wanted Shaggy, Scooby and Scrappy to leave Beaureguard plantation by scaring them saying "Go back, leave this place!"
Powers and abilities
He only carried a sword to threaten Shaggy, Scooby and Scrappy away.
Scooby-Doo meets the Boo Brothers
T.J. Buzby pretended to be the ghost of Shaggy Rogers' Uncle Beauregard in order to scare him away, leaving the way clear for him to find a hidden treasure. At the end of the film, as Shaggy, Scooby and Scrappy are driving away from the plantation they see what appears to be the real ghost of Uncle Beauregard.
"Leave this place!"
"Fools of a feather stick together. And I'm gonna stick to ya'll!"
- He appears again after T.J.'s arrest suggesting he may in fact exist.