Riccardo Atzeni (Rikatz), from Pirri and later relocated to Cagliari, was born in 1981. He works in illustration, animation, and comics.

He has created comics and illustrations for Bompiani, the Fumetti supplement of Domani Editoriale, and 7 of Corriere della Sera. As an animator, concept artist, and art director, he has worked on several independent animated short films. In 2021, Panini published Saetta Rossa, featuring texts by Marco B. Bucci. He also illustrated the novel Signor Salsiccia, written by Flavio Soriga for Bompiani. Together with Chiara Lamieri, Barbara Pirisi, and Elena Cabitza, he is a member of the Sardinian collective StudioITTE. Devo andare nello spazio (BAO Publishing, 2026) is his debut work as a sole author.