Pug was a pirate, and the leader of a gang of slavers in the Lone Islands before and during the reign of Caspian X in Narnia.
During the voyage of the Dawn Treader, when the ship first put in at the Lone Islands, his gang captured and imprisoned Caspian X, Lucy, Edmund, Eustace and Reepicheep, while they were walking on Felimath. Failing to recognise the King, he sold him to a noble, Lord Bern, then took the rest of the royal party to be sold at the slave auction at Narrowhaven.
After Caspian was recognised and his authority was reestablished over the government, he abolished slavery and rescued his friends from Pug at the slave market.
Pug was under threat of death for abducting the King, but was pardoned by Caspian, but only because that with slavery now abolished he had lost a fortune, and would be forced to live a near penniless life.
Although the others had fetched a good price as slaves, Pug was happy to let Eustace go, saying that no buyers wanted him because of his disagreeable attitude.
Film Adaption[]
Unlike the book, in the 2010 film adaption of the book, Pug and his men were made aware of Caspian's identity the moment they met. Whether they didn't believe him, or they simply didn't care, is unknown.
Caspian and crew are ambushed.
They ambushed Lucy, Edmund, Caspian and Eustace, as they were investigating the town of Narrowhaven, and put them in chains.
Pug and his men were known to sacrifice slaves that they could not sell to the Green Mist that appeared out at sea. One of the people they sacrificed was a woman called Helaine, who was the wife of an islander called Rhince.
Later that day at the slave auction; Drinian, Reepicheep and the crew of the Dawn Treader attacked the slavers to free Caspian and his friends.
When the Battle of Narrowhaven begun, Pug was pulled on the ear by Reepicheep, and then punched in the face by Drinian, before he fell to the ground and apparently lost consciousness. What became of him after that is unknown, but it is most likely that he, the Governor Gumpas, and their men were either captured and imprisoned, or killed.