Glozelle

Glozelle was a Telmarine lord in the service of King Miraz, and he was also the general of the Telmarine army. During the Narnian Revolution, Lord Glozelle and fellow Lord Sopespian plotted the death of their king just as their king had plotted the death of his brother, to become king in the first place. They planned to overthrow king Miraz and take over the kingdom themselves by talking King Miraz into accepting the challenge to a duel with Peter Pevensie. When they did so (by cleverly using Miraz's own arrogance to encourage the idea) Glozelle served as a Marshal of the Lists along with Sopespian for their king. Glozelle was especially turned against Miraz by an insult Miraz made at him that morning, though Glozelle continued to pretend to be loyal until the opportunity would arise to betray the arrogant king. During the duel at Aslan's How, King Miraz tripped and fell, and before he could stand up again, Glozelle and Sopespian stopped the duel and blamed Miraz's fall on a false move by Peter Pevensie, therefore justifying that their army spontaneously charge at the Old Narnian Army, beginning the Second Battle of Beruna. While all rushed to fight, Glozelle approached Miraz unnoticed (who was still on the ground) and stabbed him dead, saying "That was for the insult, this morning." Glozelle himself probably died during the ensuing battle, though this has never been confirmed.

Trivia

 * In the BBC film as well as in the book version of Prince Caspian, Glozelle does not appear until near the end (before the battle), in which he and Sopespian conspire against Miraz and talk him into accepting Peter's challenge. In the BBC version, however, when Miraz falls he is wounded by Peter and Glozelle stabs him dead as revenge for an earlier insult he gave him. He then attacked Peter, only to be killed by him.
 * In the Disney film version, the greatest difference of Glozelle from the book version is that it is not he, but rather Sopespian, who kills Miraz. Also, in this version, Glozelle definitely survives the Battle of Beruna and he is seen in the aftermath, being the first to agree to return to the South Sea from which all Telmarines originate. Because he was the first to step up to agree Aslan promises him a good life.  He is also portrayed in a more positive light than in other versions of the story, showing an awareness that Miraz's actions and deeds are immoral.