Rather than limit this to b-movies, I'm just going to say movies in general. However, the criteria here are fairly specific. What I'm looking for are insane characters, male or female. Not just a little delusional, obsessive, power-mad or quirky, mind you, but insane. Full-bore barking mad.
I'm going to start the list off with one of my favourites.
1 - Jack Torrance - One of Jack Nicholson's best performances as the Overlook Hotel's homicidal winter caretaker.
1. Jack Torrance
2. Rev. Harry Powell
3. Rhoda Penmark
4. Henry Lee Lucas
5. Hannibal Lecter
6. The Joker (Ledger)
7. Ace Ventura
8. Niles/Holland Perry
9. Norman Bates
10. Bozo (Toxic Avenger)
11. Frank Booth
12. Mickey Knox
13. Baby Jane Hudson
14. Aguirre (Kinski)
15. Dr. Joseph Javorski
16. Renfield
17. Dr. Frank N. Furter
18. Alex (Clockwork Orange)
19. Dr. Richard Vollin
20. The Invisible Man
21. Evil Ed
22. The Crimson Executioner
23. Max Cady (deNiro)
24. Dr. Gogol
25. Howard Beale
26. Bill Foster/D-FENS
27. Santo (Kinski)
28. The Toolbox Murderer
29. The Hollow Man
30. Anton Chigurh
31. Billy Chapman
32. Drake Sab***h
33. The Irishman (Braveheart)
34. Farmer Vincent
35. Jay Porter
36. Kevin Spacey (Seven)
37. Don Maxwell (Maniac)
38. The Maniac (Joe Spinell)
39. Krug (Last House on the Left)
40. Robert Montgomery (Night Must Fall)
41. Cody Jarrett
42. George Harvey Bone
43. Johnny Barrett (Shock Corridor)
44. The Sadist (Arch Hall Jr.)
45. Matthew (Scream Bloody Murder)
46. Ray Sinclair (Something Wild)
47. Caligula
48. Kevin (Sin City)
49. Leatherface
50. Gene Tierney (Leave Her to Heaven)
51. Jill Banner (Spider Baby)
52. Bennett (Commando)
53. Herbert West
54. Mother Firefly (Devil's Rejects)
55. Kesslee (Tank Girl)
56. Mad (Jubilee)
57. Evelyn Draper
58. Nora Desmond
59. J. Frank Parnell
60. Joan Crawford (Faye Dunaway)
61. The Night Rider
62. Vic Vega, "Mr. Blonde"
63. Dr. Tolian Soren
64.