For some reason I've never liked Dr. D. Not sure why though. Foxbat, on the other hand, is great for getting on players nerves, ecspecially if you have a player that tends to fly off the handle when his character is "picked on":D .
Yeah, I know it's mean but this guy was a constant pain in th butt when he played so I went out of my way to make things difficult for his character. If he planned a picnic, it would rain; his NPC dependents were constantly being kidnapped, mugged, fired from their jobs. (damn the bad luck...he he he).
A few more old stand bys, like Howler, Pulsar, and Lady Blue showed up a lot. The rest of my villains were usually my creation.
Almost forgot about PSI, and the VOICE. I really never got into Viper, Demon, or Genocide.
I still need to pick up CKC, and compair them with my old copy of Classic Enemies.