Grimaldi is both a writer and a colorist. Born in 1975, she studied foreign languages at the University of Lyon and communication at the Lyon Ecole des Beaux-Arts. She collaborated with her husband, Bannister, on short stories for the graphic novel anthology., Flight and is the colorist for his series Titoss et Ilda (Dupuis). She is the colorist for Tib & Tumtum as well. Bannister was born in 1973 and has been creating graphic novels since the age of 17. He is the illustrator of the popular Tib & Tumtum series and The Elsewhere Chronicles series. His work has also appeared in Flight Explorer (Villard Books/Random House) and several editions of the Flight anthology.