An antagonist of Gundam 00. He is an archenemy of both Setsuna F. Seiei and Neil Dylandy.
He's a former Middle-Eastern guerrilla turned mercenary. Excels in close quarters combat and is the one who trained Setsuna (formerly known as Soran Ibrahim) to be a child soldier. He is also responsible for the death of the Dylandy family. Both Neil and Lyle survive the killing, but the former got killed years later, in his duel against Ali himself.
He pilots the AEU Enact Ali Al-Saachez Custom, the Agrissa Type 13, the Gundam Throne Zwei and the Arche Gundam.