.Jason Bourne/David Webb/Delta- He is the main protagonist of the series and is a CIA agent. In the first book, he originally lost his memory and was manipulated by the government to be a counter assassin.
Marie Webb- David's wife, who he met while trying to escape from an assassin. She is very important to him and originally convinced him in the first book that he was not actually an assassin.
Alexander Conklin- Originally tried to kill David because he thought that he turned bad, but now is his friend. Also, he helped Marie escape after they kidnapped her and got her safely back to David.
Mo Panov- David's psychiatrist who tries to help him get his memory back and was recommended by Alexander Conklin.
Catherine Staples - Former colleague of Marie who helps her escape from her kidnappers. She was working at the Canadian consulate in Hong Kong, where Marie was held.
Raymond Haviland- An important Ambassador with questionable morals, who was part of the plan to manipulate David.
Edward McAllister- An undersecretary who is smart and develops the main strategy to catch the fake Jason Bourne with Ambassador Haviland.
Sheng Chou Yang- An important Communist official in China who worked with the fake Jason Bourne so that he could rise to power. Officials think that he might trigger a war if high ranking officials keep dying.
Lin Wenzu- A major in MI6 and works with the Americans.
Fake Jason Bourne - A man who has taken on Bourne's identity and sometimes works for Sheng. He was being tracked by the real Jason Bourne and assassinated a high ranking official.
Echo - A spy who worked with Bourne in Medusa and trained the fake Bourne, but is now helping Bourne catch him.
Marie Webb- David's wife, who he met while trying to escape from an assassin. She is very important to him and originally convinced him in the first book that he was not actually an assassin.
Alexander Conklin- Originally tried to kill David because he thought that he turned bad, but now is his friend. Also, he helped Marie escape after they kidnapped her and got her safely back to David.
Mo Panov- David's psychiatrist who tries to help him get his memory back and was recommended by Alexander Conklin.
Catherine Staples - Former colleague of Marie who helps her escape from her kidnappers. She was working at the Canadian consulate in Hong Kong, where Marie was held.
Raymond Haviland- An important Ambassador with questionable morals, who was part of the plan to manipulate David.
Edward McAllister- An undersecretary who is smart and develops the main strategy to catch the fake Jason Bourne with Ambassador Haviland.
Sheng Chou Yang- An important Communist official in China who worked with the fake Jason Bourne so that he could rise to power. Officials think that he might trigger a war if high ranking officials keep dying.
Lin Wenzu- A major in MI6 and works with the Americans.
Fake Jason Bourne - A man who has taken on Bourne's identity and sometimes works for Sheng. He was being tracked by the real Jason Bourne and assassinated a high ranking official.
Echo - A spy who worked with Bourne in Medusa and trained the fake Bourne, but is now helping Bourne catch him.