Every Nintendo villain... That's still around... And is Reoccurring...

[guild525]

Bowser Jr. and Mario (He was a villain, appeared in a game in the last 10 years, and is a part of a popular franchise.)

Edit: Forgot Ridley. You already have him up there never mind....Ugh. I remember Giygas and Porky though from the Mother series and does Metroid count?