In the other type of stories, he is a director-actor of his own stories, is highly personified walking with two feet behind the sets (and walking like a normal dog when acting), and is famous for the strips in which he talks to objects, especially the rock called Mrs. Stone.

[2] His first appearance was in 1959 in the comic strip Bidu e Franjinha published in the newspaper Folha da Manhã.

[3] The very first stories had the boy Franklin (Blu's owner) and his friends Bucky, Jeremiah, Manezinho and Hummer as protagonists.

In 1960, through a partnership with the publisher Editora Outubro, Mauricio de Sousa collaborated making stories of his characters to children's magazine Zaz Traz, while in the same year he created Blu and Franklin's own magazine, titled Bidu by Continental.

[8] Blu is considered an iconic character in Brazil, especially when it comes to his creator Mauricio de Sousa.