A recurring boss in the [[Metroid]] series, appearing in almost every Metroid game, often encountered towards the end of the game.

Ridley's appearance is similar to a skeletal pterodactyl with glowing eyes. Ridley is known for being very defiant and persistent; though [[Samus Aran|Samus]] has killed him many times, he always finds a way to return, either through cloning or robotics. 

h4. Forms

* Normal ([[Metroid]], [[Metroid: Zero Mission|Zero Mission]])
* [[Meta Ridley]] ([[Metroid Prime|Prime]], [[Metroid Prime 3: Corruption|Prime 3: Corruption]])
* Omega Ridley ([[Metroid Prime 3: Corruption|Prime 3: Corruption]])
* Organic Purple ([[Super Metroid]])
** Clone ([[Metroid: Other M|Other M]])
* Ridley-X ([[Metroid Fusion|Fusion]])
リドリー