Ghorin

Ghorin was an Imperial officer and supplier. After the Battle of Yavin, Ghorin presented himself as defected to the Rebellion and offered to supply them. Unfotunately, this was only a mask, and supplied the Rebels with poisoned grain.

The Rebels soon discovered that, and managed to sabotage his cargo, replacing the grain intended for the Imperials, with the poisoned cargo.

The plan worked and the Rebels took the usable cargo, while the Empire received the other. Ghorin was assumed a traitor and Darth Vader executed Ghorin personally.