Ridley is a character from the Metroid series, and a major antagonist throughout the majority of the series, in which he generally acts as one of the later bosses. A draconic creature hailing from Zebes, Ridley is a vicious, yet highly intelligent member of the Space Pirates, and is one of its most prominent leaders, alongside Mother Brain. He is also the arch-nemesis of the Metroid series' protagonist, Samus Aran.