Ridley

Ridley is a major antagonist in the Metroid series. He is known as the Cunning God of Death.

Personality
As seen in the lyrical version of his theme, Ridley craves destruction and death, and is willing to wipe out all of existence for his own satisfaction. In the Metroid manga, Ridley has also been shown to be a cunning and sinister villain, hence his title of "Cunning God of Death".

Ridley also seems to have a humorous side to him, such as when he picks up Mario's cap and twirls it, something similar to what the plumber himself would do. Of course, his humor is dark and twisted, and not for the faint of heart.

Trivia

 * Chiaki Sakura Rose once mained Ridley before switching to King Dedede.
 * As seen in the Metroid manga, Ridley can indeed talk. This makes the lyrical adaption of his theme possibly canon, and it's at least canon in the stories of Chiaki.