Viidu, also known as the King of Cargo, was a male human that lived on the planet Ord Mantell during the Cold War. During the Civil War, he ran a freight company named Rendia Freight from an office in the Republic held Fort Garnik. Viidu at one time employed the smuggler known as Voidhound to deliver a shipment of weapons to him on Ord Mantell, but the cargo along with Voidhound's ship was stolen by Skavak, one of Rendia Freight's own employees, for the local Separatist movement. As the weapons were the property of an extremely dangerous crime lord known as Rogun the Butcher, Viidu put all efforts into retrieving them, hiring Voidhound and using his own employee Corso Riggs to track down Skavak and retrieve the blasters. Voidhound and Corso eventually tracked the blasters down to the Separatists main fortress in Mount Avilatan and attempted to retrieved them on Viddu's orders, but while the pair were away, Viidu's girlfriend Syreena, whom was having an affair with Skavak, murdered Viidu.
Viidu was an intelligent and influential man with a reasonable amount of power on Ord Mantell. He greatly enjoyed drinking and eating, the later of which he did especially when he was worried, and also had a taste for artwork which he collected. Viidu showed great affection to his partner Syreena, asking Voidhound to look after her after his own death, but was willing to turn her over to Rogun the Butcher when he discovered her treachery. Due to his age Viidu may have had issues with his health as Syreena would remind him he had to stay calm as excitement was bad for his heart.