Season 1

1. Medals, Underwear, and a Mysterious Arm

A mysterious arm reawakens the Greeed from their slumber and decides to use Eiji Hino, a cheerful wanderer, as his means of getting back what he desires as Kamen Rider OOO.

2010-09-05 • 23 min

2. Desire, Ice Pops, and Presents

Ankh explains the Greeed and the purpose of the Medals to Eiji, even as the human desires to merely use his new power to fight for good instead of for selfish needs.

2010-09-12 • ? min

3. A Cat, Evolution, and a Glutton

Ankh becomes troubled when Eiji prevents him from eliminating his possessed body's sister while another Greeed uses a man's gluttony to create more Medals.

2010-09-19 • ? min

4. Doubt, a Picture Message, and a Helping Hand

Ankh threatens to leave OOO for Kazari and the Greeed while investigating the evolution of humanity while Eiji tries to find more about Hina.

2010-09-26 • ? min

5. A Game of Tag, a Nest, and a Rich Girl

Kougami asks for a share of Eiji and Ankh's Medals, while Mezool decides to use Hina's shopaholic classmate to create a new Yummy.

2010-10-03 • ? min

6. Fashion, a Contract, and the Strongest Combo

Hina confronts Yamano's shopping addiction when her father goes bankrupt while Ankh confronts Kougami about his share deal of the Cell Medals.

2010-10-10 • ? min

7. A Lousy Husband, a Trap, and a Jackpot

Eiji tries to research a husband bullied by his wife that is being mocked by Gamel while Ankh follows a lead for a missing Core Medal.

2010-10-17 • ? min

8. Sabotage, Having No Greed, and Taking a Break

Amidst Hino's failed attempts at stopping the Komoris' argument, Momoko takes the winning scratchcard and throws it into a nearby river. As Takeshi frantically searches for it, she reveals to Hino why Takeshi has become so greedy.

2010-10-24 • ? min

9. Drenched, the Past, and the Scorching Combo

In flashbacks, Eiji fails to save a girl amidst a foreign civil war. In the present, Satonaka meets with Eiji to collect Kougami's fee until an explosion occurs outside.

2010-10-31 • ? min

10. A Fist, an Experiment, and a Super Bike

As Maki observes the bomber, Kougami Biotech Laboratory technician Toru Tadano, Ankh scolds Eiji, who later discovers Maki's whereabouts.

2010-11-07 • ? min

11. A Traveler, a Swallowtail, and a Celebrity

Eiji encounters an old friend and globetrotting blogger, Keisuke Tsukuba, who has come to Japan to find a publisher for his work.

2010-11-14 • ? min

12. An Eel, the World, and the Gravity Combo

Following Goto's attack, the Ageha Yummy retreats again while Eiji learns of Goto's distate towards him.

2010-11-21 • ? min

13. Episode 13

2010-11-28 • ? min

14. Episode 14

2010-12-05 • ? min

15. Episode 15

2010-12-12 • ? min

16. Episode 16

2010-12-19 • ? min

17. Episode 17

2010-12-26 • ? min

18. Episode 18

2011-01-02 • ? min

19. Episode 19

2011-01-09 • ? min

20. Episode 20

2011-01-16 • ? min

21. Episode 21

2011-01-23 • ? min

22. Episode 22

2011-01-30 • ? min

23. Episode 23

2011-02-06 • ? min

24. Episode 24

2011-02-13 • ? min

25. Episode 25

2011-02-20 • ? min

26. Episode 26

2011-02-27 • ? min

27. Episode 27

2011-03-06 • ? min

28. Episode 28

2011-03-13 • ? min

29. Episode 29

2011-03-20 • ? min

30. Episode 30

2011-03-27 • ? min

31. Episode 31

2011-04-03 • ? min

32. Episode 32

2011-04-10 • ? min

33. Episode 33

2011-04-17 • ? min

34. Episode 34

2011-04-24 • ? min

35. Episode 35

2011-05-01 • ? min

36. Episode 36

2011-05-08 • ? min

37. Episode 37

2011-05-15 • ? min

38. Episode 38

2011-05-22 • ? min

39. Episode 39

2011-05-29 • ? min

40. Episode 40

2011-06-05 • ? min

41. Episode 41

2011-06-12 • ? min

42. Episode 42

2011-06-19 • ? min

43. Episode 43

2011-06-26 • ? min

44. Episode 44

2011-07-03 • ? min

45. Episode 45

2011-07-10 • ? min

46. Episode 46

2011-07-17 • ? min

47. Episode 47

2011-07-24 • ? min

48. Episode 48

2011-07-31 • ? min