During the early 2000s, Code Geass was a groundbreaking mecha anime series with immense popularity among English and Japanese audiences despite not having its origin as a manga series. Many even considered the original series to be the chief rival of the equally beloved Death Note series, with a similar emphasis on strategy, manipulation, and anti-hero protagonists who lied through their teeth.
Source:https://www.cbr.com/code-geass-last-cloudia-reignites-fan-interest/