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.
Darkseid
He is the father of Orion, Kalibak, Grayven and Grail. As the tyrannical ruler of the planet Apokolips, Darkseid's ultimate goal is to conquer the universe and eliminate all free will. One of the most powerful beings in the DC Universe, the character became a staple Superman villain and is considered the archenemy of the Justice League. Darkseid was ranked number 6 on IGN's top 100 comic book villains of all time and number 23 on "Wizard"s 100 greatest villains of all time.