Ridley (Metroid)
Often considered one of the most memorable Nintendo villains, Ridley has been a mainstay of the series, having appeared (through various incarnations) in almost every "Metroid" game to date (all but "", "Metroid Prime Hunters" and ""). He has also appeared in the "Super Smash Bros." series, however, he had not been made a playable character until "Super Smash Bros. Ultimate" in 2018, making it also the first game overall to have Ridley as a playable character.
List of Super Friends villains
Dr. Ihdrom creates the powerful android World Beater from the demise of over 100 super-villains including Spectrum, Anti-Man, Thunderhead, Powerhouse, The Traveler, The Apparition, Turncoat, Ultra-Light, Firelord, Sub-Zero, and Bombshell and pits his creation against Earth's heroes. First appearance in "Super Friends" #3 (February 1977).