NinjaB, I used villains of all different versions. I still use Wee Willie as originally created (which includes using the powers as intended in Champions 1st/2nd edition). I've used villains from Edition 1, 2, 3, 4, 5. Don't use 6th edition. I adapt easily from edition to edition and the players are none the wiser. Yes, sometimes I do update a villain to a newer edition but overall, just use them as is.