The ghost sergeant was the disguise of Jebb.
Physical appearance[]
The ghost sergeant was a luminescent ghost with a skeletal face, a long beard and mustache, glowing white eyes and crooked and damaged teeth. He donned a sergeant's uniform, consisting of a double-breasted coat with shoulder pads, slightly-damaged sleeves and a belt. He wore a hat emblazoned with a double-rifle logo, and his pants were tucked into his boots.
Personality[]
The sergeant was a hostile ghost that often chased people out of the historic battlefield. Being the leader of an army division, he often ordered his men to fire cannons at his victims. Despite not being afraid of confronting his targets, his ultimate goal is to acquire a map showing the location of the lost treasure, so once he acquired this item he avoided confrontation and attempted to retreat.
History[]
Scooby-Doo and Guess Who?[]
Season one[]

Jebb unmasked.
Jebb wanted to locate a lost supply of gold buried in the historic Pennsylvania battlefield, keeping the treasure for himself. So, as he dug up various locations around the battlefield to search for the gold, he created the ghost sergeant disguise to keep tourists away from his operations, using a holographic projector to simulate the other zombie ghosts. Despite acquiring the map, he was subsequently captured and exposed for his crimes, being handed over to the authorities.