Rainbow S.p.A.

Rainbow S.p.A. is an Italian television studio founded by Iginio Straffi. It is co-owned by Viacom and Straffi. The studio is well-known for its animated shows, including Winx Club and Huntik: Secrets & Seekers.

Rainbow's CGI division animated Gladiators of Rome. The movie was in production at the studio since at least 2008. Gladiators cost over $55 million to produce and only earned around $10 million at the worldwide box office, causing Rainbow and Viacom Italy to undergo a significant financial loss. The loss from Gladiators caused them to take cost-cutting measures on the Winx Club series: replacing the show's Hollywood voice cast and eliminating the fully-CGI segments.