Jesper

Jesper is the main protagonist of the critically acclaimed animated Christmas film "Klaus". He's portrayed as a spoiled and selfish postman who learns compassion and selflessness when teaming up with a lonely woodsman named Klaus to begin the Santa Claus tradition.

Jesper is the name of Hannah Relf's marmoset dæmon in Philip Pullman's 'The Book of Dust'.

Jesper Fahey is one of the main characters in Leigh Bardugo's Six of Crows duology.

Jesper Kyd is a prominent video game music composer from Denmark, who has won many industry awards for his work.

This is probably of little interest to people outside Norway, but in the tale about Kardemommeby (cardamomtown) by the Norwegian author Thorbjørn Egner, there are three thieves named Kasper, Jesper and Jonathan.

Another famous bearer of this name was the cub of Elsa the lioness from the film Born Free. He was was featured in the film Living Free.

A famous Jesper is Jesper Parnevik, golf-player.