Ridley (リドリー, Ridorii) is a high ranking Space Pirate, the arch enemy of Samus Aran, and is one of the most common recurring characters in the Metroid series, appearing in almost every Metroid game, often encountered towards the end of the game. Ridley's appearance is considered similar to a skeletal pterodactyl with glowing eyes. Ridley is known for being very defiant and persistent; though Samus has defeated him many times, he always manages to return and do battle with her, either through his healing abilities, cloning or robotic enhancements.
Despite his fearsome and bestial appearance, Ridley is known to be highly intelligent and is shown to even be capable of speaking in the manga. He is known to have a bloodthirsty personality and takes great personal enjoyment in destruction. Though he often appears in different forms, through scans found in the Metroid Prime sub-series and events portrayed in Metroid: Other M, it is confirmed that every incarnation of Ridley before the latter game and Metroid Fusion is indeed the same being, from the manga to Corruption, despite his multiple defeats (some of which involve his body exploding). In most games he has appeared in he has been the second to last boss (or 3rd to last boss if there are multiple final bosses) except for Zero Mission and Other M; however his robotic creation (made in his image) is the final boss in the former game.
The manga also has revealed that Ridley is extremely adept at survival. Ridley was capable of healing his wounds by eating human flesh, as illustrated in the manga in a part where he stated that he survived the destruction of his flagship by consuming the bodies and cells of the dead humans in K-2L.
In The Machinima, Ridley Is A Major Character In The Machinima Universe, Despite The Fact He Appeared In Very Little Scripts Due To The Fetish Activity Going On. Ridley Was Stopped By DigitalPh33rson, Mashiro For Discipline, And Gin Ichimaru After Being Stabbed In The Heart. Ridley Was Finally Cured By The Space Pirates And Finally Returned In Action Against DigitalPh33rson And His Friends, The Power That He Wields Are Immense. And He Will Destroy Anyone.