Ben 10 X Kamen Rider Neo: All Riders' Identities

There are only 66 Alien Riders (in order).

1. Kamen Rider Heatblast: Shana
2. Kamen Rider Wildmutt: Shido Itsuka
3. Kamen Rider Diamondhead: Kazuto Kirigaya
4. Kamen Rider XLR8: Kei Karuizawa
5. Kamen Rider Grey Matter: Keita Amano
6. Kamen Rider Four Arms: Yuji Sakamoto
7. Kamen Rider Stinkfly: Yoto Yokodera
8. Kamen Rider Ripjaws: Ryuji Takasu
9. Kamen Rider Upgrade: Karen Tendo
10. Kamen Rider Ghostfreak: Akiko Himenokoji
11. Kamen Rider Cannonbolt: Yosuke Hirata
12. Kamen Rider Wildvine: Inari Fushimi
13. Kamen Rider Spitter: Ryosuke Kaga
14. Kamen Rider Buzzshock: Aria Kanzaki
15. Kamen Rider Arctiguana: Adachi Sakura
16. Kamen Rider Blitzwolfer: Ryoko Okami
17. Kamen Rider Snare-oh: Haruna
18. Kamen Rider Frankenstrike: Accelerator
19. Kamen Rider Upchuck: Tsukiko Tsutsukakushi
20. Kamen Rider Ditto: Tomoya Aki
21. Kamen Rider Eye Guy: Yusaku Kitamura
22. Kamen Rider Way Big: Hotaro Oreki
23. Kamen Rider Swampfire: Subaru Natsuki
24. Kamen Rider Echo Echo: Jun Goto
25. Kamen Rider Humungousaur: Hanzo Urushihara
26. Kamen Rider Jetray: Akito Himenokoji
27. Kamen Rider Big Chill: Miyuki Shiba
28. Kamen Rider Chromastone: Tohka Yatogami
29. Kamen Rider Brainstorm: Hideki Nishimura
30. Kamen Rider Spidermonkey: Taketo Akutagawa
31. Kamen Rider Goop: Tomoka Minato
32. Kamen Rider X Mark 2: Haruhi Suzumiya
33. Kamen Rider Lodestar: Harutora Tsuchimikado
34. Kamen Rider Rath: Taiga Aisaka
35. Kamen Rider Nanomech: Fear Kubrick
36. Kamen Rider Water Hazard: Suzune Horikita
37. Kamen Rider AmpFibian: Mikoto Misaka
38. Kamen Rider Armodrillo: Kodaka Hasegawa
39. Kamen Rider Terraspin: Akihisa Yoshii
40. Kamen Rider NRG: Rentaro Satomi
41. Kamen Rider Fasttrack: Taichi Yaegashi
42. Kamen Rider ChamAlien: Kuroha Shida
43. Kamen Rider Eatle: Hiroshi Yuki
44. Kamen Rider Clockwork: Kiyotaka Ayanokoji
45. Kamen Rider Jury Rigg: Tazuna Takatsuki and Koyori Akutagawa
46. Kamen Rider Shocksquatch: Toma Kamijo
47. Kamen Rider Feedback: Asuna Yuki
48. Kamen Rider Bloxx: Hideyoshi Kinoshita
49. Kamen Rider Gravattack: Yoshifumi Aoki
50. Kamen Rider Crashhopper: Yozora Mikazuki
51. Kamen Rider Ball Weevil: Kirino Kosaka
52. Kamen Rider Walkatrout: Yoshino Himekawa
53. Kamen Rider Pesky Dust: Ako Tamaki
54. Kamen Rider Mole-Stache: Kanji Ike
55. Kamen Rider Worst: Kota Tsuchiya
56. Kamen Rider Kickin' Hawk: Sayu Ogiwara
57. Kamen Rider Toepick: Kazuhito Harumi
58. Kamen Rider Astrodactyl: Minori Kushieda
59. Kamen Rider Bullfrag: Ken Sudo
60. Kamen Rider Atomix: Tatsuya Shiba
61. Kamen Rider Gutrot: Haruki Yamauchi
62. Kamen Rider Whampire: Kojo Akatsuki
63. Kamen Rider Overflow: Aqua
64. Kamen Rider Shock Rock: Yuji Sakai
65. Kamen Rider Slapback: Kikyo Kushida
66. Kamen Rider Surge: Kotori Itsuka

And the last one is the bonus: Kamen Rider Omni-Blast!
The Fusion Form of all of the Alien Riders!

Music: Ben 10 Omniverse. Credits to Cartoon Network.

I don't own those characters. All rights belong to Toei, Kadokawa, and Cartoon Network.

I don't own Ben 10 & Kamen Rider. All belong to Toei and Cartoon Network.