Power Rangers: Over 100 Rangers

1. Blue Ranger
2. Red Ranger
3. Black Ranger
4. Pink Ranger
5. Yellow Ranger
6. Green Ranger
7. White Ranger
8. Aquitar Blue
9. Aquitar Red
10. Aquitar White
11. Aquitar Yellow'
12. Aquitar Black
13. Zeo Ranger V Red
14. Zeo Ranger IV Green
15. Zeo Ranger III Blue
16. Zeo Ranger II Yellow
17. Zeo Ranger I Pink
18. Gold Ranger
19. Green Turbo Ranger
    
20. Pink Turbo Ranger
    
21. Red Turbo Ranger
    
22. Yellow Turbo Ranger
23. Blue Turbo Ranger
24. Phantom Ranger
25. Blue Ranger
26. Pink Ranger
27. Red Ranger
28. Silver Ranger
29. Yellow Ranger
30. Black Ranger
31. Green Galaxy Ranger
    
32. Pink Galaxy Ranger
    
33. Red Galaxy Ranger
    
34. Yellow Galaxy Ranger
35. Blue Galaxy Ranger
36. Magna Defender
37. Green Lightspeed Ranger
    
38. Pink Lightspeed Ranger
    
39. Red Lightspeed Ranger
    
40. Yellow Lightspeed Ranger
41. Blue Lightspeed Ranger
42. Titanium Ranger
43. Green Time Ranger
    
44. Pink Time Ranger
    
45. Red Time Ranger
    
46. Yellow Time Ranger
47. Blue Time Ranger
48. Quantum Ranger
49. 
50. Black Wild Force Ranger
    
51. White Wild Force Ranger
    
52. Red Ranger
    
53. Yellow Ranger
54. Blue Ranger
55. Lunar Wolf Ranger
56. Blue Wind Ranger
57. Red Wind Ranger
58. Yellow Wind Ranger
59. Crimson Ranger
60. Navy Ranger
61. Green Samurai Ranger (1)
62. 
    Blue Ranger
63. Red Ranger
64. Yellow Ranger
65. Black Ranger
66. White Ranger
67. Red Ranger
68. Blue Ranger
69. Yellow Ranger
70. Pink Ranger
71. Green Ranger
72. Omega Ranger
73. Shadow Ranger
74. Kat Ranger
75. Nova Ranger
76. Red Mystic Ranger
77. Blue Mystic Ranger
78. Yellow Mystic Ranger
79. Pink Mystic Ranger
80. Green Mystic Ranger
81. White Mystic Ranger
82. Wolf Knight
83. Solaris Knight
84. Red Ranger
85. Blue Ranger
86. Yellow Ranger
87. Black Ranger
88. Pink Ranger
89. Mercury Ranger
    
90. Jaguar Ranger
    
91. Tiger Ranger
    
92. Wolf Ranger
    
93. Cheetah Ranger
94. Rhino Ranger
95. Shark Ranger
96. Elephant Ranger
97. Bat Ranger
    
98. Ranger Yellow
    
99. Ranger Green
    
100. Ranger Red
101. Ranger Blue
102. Ranger Black
     
103. Ranger Gold
104. Ranger Silver
105. Red Samurai Ranger
106. Blue Samurai Ranger
107. Yellow Samurai Ranger
108. Pink Samurai Ranger
109. Green Samurai Ranger (2)
110. Gold Samurai Ranger

And if you want to add the A-Squad Rangers and the upcoming female Red Ranger, then we got 116 Rangers.

UPDATED 9/12/11
If Goklaiger is adapted, these are the ones that have Ranger Keys from Gokaiger and maybe there will be more for Power Rangers. These of course of ones that currently went from Sentai to Power Ranger, if Saban chooses to adapt old teams--that's fine, but I am only counting the ones that are currently Power Rangers and are originally from Super Sentai.

1. Blue Ranger
2. Red Ranger
3. Black Ranger
4. Pink Ranger
5. Yellow Ranger
6. 
   Aquitar Blue
7. Aquitar Red
8. Aquitar White
9. Aquitar Yellow
10. Aquitar Black
11. 
    Zeo Ranger V Red
12. Zeo Ranger IV Green
13. Zeo Ranger III Blue
14. Zeo Ranger II Yellow
15. Zeo Ranger I Pink
16. 
    Green Turbo Ranger
    
17. Pink Turbo Ranger
    
18. Red Turbo Ranger
    
19. Yellow Turbo Ranger
20. Blue Turbo Ranger
21. 
    Blue Ranger
22. Pink Ranger
23. Red Ranger
24. Yellow Ranger
25. Black Ranger
26. 
    Green Galaxy Ranger
    
27. Pink Galaxy Ranger
    
28. Red Galaxy Ranger
    
29. Yellow Galaxy Ranger
30. Blue Galaxy Ranger
31. 
    Green Lightspeed Ranger
    
32. Pink Lightspeed Ranger
    
33. Red Lightspeed Ranger
    
34. Yellow Lightspeed Ranger
35. Blue Lightspeed Ranger
36. 
    Green Time Ranger
    
37. Pink Time Ranger
    
38. Red Time Ranger
    
39. Yellow Time Ranger
40. Blue Time Ranger
41. 
    Black Wild Force Ranger
    
42. White Wild Force Ranger
    
43. Red Ranger
    
44. Yellow Ranger
45. Blue Ranger
46. 
    Blue Wind Ranger
47. Red Wind Ranger
48. Yellow Wind Ranger
49. Crimson Ranger
50. Navy Ranger
51. Green Samurai Ranger
52. 
    Blue Dino Ranger
53. Red Dino Ranger
54. Yellow Dino Ranger
55. Black Dino Ranger
56. 
    SPD Red Ranger
57. SPD Blue Ranger
58. SPD Yellow Ranger
59. Pink Ranger
60. Green Ranger
61. 
    Red Mystic Ranger
62. Blue Mystic Ranger
63. Yellow Mystic Ranger
64. Pink Mystic Ranger
65. Green Mystic Ranger
66. 
    
    Red Ranger
67. Blue Ranger
68. Yellow Ranger
69. Black Ranger
70. Pink Ranger
71. 
    Jaguar Ranger
    
72. Tiger Ranger
    
73. Wolf Ranger
    
74. Cheetah Ranger
75. Rhino Range
76. 
    Ranger Yellow
    
77. Ranger Green
    
78. Ranger Red
79. Ranger Blue
80. Ranger Black
    
81. 
    Red Samurai Ranger
82. Blue Samurai Ranger
83. Yellow Samurai Ranger
84. Pink Samurai Ranger
85. Green Samurai Ranger (2)
86. 
    Red Ranger
87. Black Ranger
88. Blue Ranger
89. Yellow Ranger
90. Pink Ranger
91. 
    Sixth Rangers: Green Ranger
92. 
    White Ranger
93.  
    Gold Ranger
94. 
    Silver Ranger
95. 
    Quantum Ranger
96. 
    Lunar Wolf Ranger
97. 
    Green Samurai Ranger (1)
98. 
    White Dino Ranger
99. 
    Omega Ranger
100. 
     Solaris Knight
101. 
     Mercury Ranger
102. 
     Ranger Gold
103. 
     Ranger Silver
104. 
     Gold Samurai Ranger
105. 
     Robo Knight
106. 
     Extra Heroes: Blue Senturion
107. 
     Magna Defender
108. 
     Shadow Ranger
109. 
     Kat Ranger
110. 
     White Mystic Ranger
111. 
     Wolf Warrior
112. 
     Sentinel Knight
113. 
     Camile
114. 
     Jarrod
115. 
     Red Samurai Ranger (Lauren)

And the Gokaiger keys make 121!

I see them adding keys of Titanium Ranger, Phantom Ranger, Bat Ranger, Shark Ranger and Elephant Ranger, there would be like 126 keys and if they adapt AkaRed, I suppose him too.