Series Cast 18

1. 

   Mario Maurer

   Onizuka Takeshi (24 Episodes)

2. 

   Nadech Kugimiya

   Onizuka Ryu (24 Episodes)

3. 

   Urassaya Sperbund

   Takahachi Mayumi (24 Episodes)

4. 

   Natapohn Tameeruks

   Seiko (12 Episodes), Praedow (Seiko)(Takeshi's Lover/Mistress) (12 Episodes)

5. 

   Chartayodom Hiranyatithi

   Onizuka Ichiro (Takeshi's Father) (12 Episodes)

6. 

   Sarocha Watittapan

   Onizuka Hideko (Takeshi's Mother) (12 Episodes)

7. 

   Nithi Smuthkochorn

   Kazuma (12 Episodes)

8. 

   Tanakorn Posayanon

   Sasaki Koji (12 Episodes)

9. Phanudet Watanasuchart

   Masato (12 Episodes)

10. 

    Napapa Tantrakul

    Mizawa Aiko (Takeshi's fiancé) (12 Episodes)

11. 

    Sarunyoo Prachakit

    Mizawa Satoshi (Takeshi's rivalry ) (12 Episodes)

12. 

    Dom Haetrakul

    Mizawa Renki (Takeshi's uncle) (12 Episodes)

13. 

    Suriyont Arunwattanakul

    Sato Kenichi (12 Episodes)

14. 

    Jessica Pasaphan

    Abe Miyoko (12 Episodes)

15. 

    Krunnapol Teansuwan

    Abe Hiro (12 Episodes)

16. 

    Boromwuti Hiranyatithi

    Yama (12 Episodes)

17. 

    Songsit Rungnopakunsi

    Osamu Mizaki (12 Episodes)

18. 

    Rachawat Klipngern

    Suji (12 Episodes)

Series Crew 3