In Shrek the Third, what is the name of Fiona’s teenage cousin who becomes heir to the throne?

In Shrek the Third, Fiona’s teenage cousin who becomes heir to the throne is Arthur Pendragon.

Arthur, commonly called Artie, is introduced as an unpopular student at Worcestershire Academy. Shrek searches for him after learning that he is the only suitable heir following King Harold’s illness and death. The journey becomes an important part of the film’s story because Artie must gain confidence before accepting royal responsibility.

Justin Timberlake voices Arthur in the original English-language version. The character’s name comes from the legendary King Arthur, although the film presents him as a modern teenager rather than as a medieval hero.

Arthur is sometimes mistaken for Prince Charming because both are connected to royalty. They are different characters: Charming is Fiona’s former arranged suitor, while Arthur is Shrek’s cousin by marriage and the intended successor to the throne.