New Disney Villains?

[Goofy0101]

Hi everyone, I'm a bit of a villains fanatic and, while I love all the characters Disney has out in the parks, I'd like to see more of the villains. I know MNSSHP is the place to find them, but as my family can't make it at that time this year we are going around Christmastime instead.

I know it's EXTREMELY rare to find some of these characters, but if you have any tips of slight possibilities on where I might find the following characters, please tell me where.
1. Maleficent
2. Lady Tremaine
3. Hades
4. Cruella de Ville
5. Darkwing Duck
6. Jafar
7. Frollo
8. Darth Vader
9. Governor Ratcliffe
10. Shan Yu (I know he hasn't been around for a LONG time but maybe someone here knows more than me)

Thanks a lot everyone; and again I know most of these are almost hopeless but please let me know if there are ANY places in the parks I might have some chance of finding them.