Alessandro Chiarolla was born in Mogadishu, Somalia, an Italian colony in Africa at the time. He entered the comics field with the help of Renato Polese. He began working for Il Vittorioso in 1960, with his first comic 'La Bella Petroia'. During the 1960s, he produced many comics for Il Vittorioso and Il Giornalino.
Until 1974, he drew for foreign publishers through art agencies. For the British Fleetway, he worked on Tina, Tiger, Hurricane and Buster ('Patch Eye Hooker', etc.). For France, he illustrated strips with 'Lancelot', and for Germany, he produced 'Reno Kid' and 'Buffalo Bill'.
He cooperated with Alfredo Castelli on several stories for Il Giornalino and Il Corriere dei Ragazzi, such as 'Bassa Marea', 'Fortini sul Fiume' and the series 'Central Hospital'. After a brief stint at the publishing houses Lancioi and Edifumetto, Chiarolla joined the publishing house Bonelli, where he illustrated such series as 'Bella & Bronco', 'Martin Mystère' and 'Zagor'.