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.
Merlyn (DC Comics)
Merlyn next appears as one of the primary villains in the Injustice Gang in the "Identity Crisis" miniseries. He warns and correctly predicts that the death of Sue Dibny would have troublesome and dire consequences in the criminal underworld. Although the Justice League manages to capture Merlyn, Monacle and Deadshot, the latter is able to use connections with the Suicide Squad and Amanda Waller to arrange for their release, much to the frustration of the newest Manhunter. Merlyn, Deadshot, Monacle and Phobia later attempt to kill the Shadow Thief during his trial, but are confronted and stopped by the Manhunter.