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 Marvel 1602 characters
"Please note: among the characters classed as villains (i.e. enemies of the main protagonists) are characters who in the mainstream Marvel universe are actual heroes like Hulk or villains-turned-heroes like the Scarlet Witch, Quicksilver and the Black Widow"