Dragon Ball Z Kai - Season 4 - Eps 1: Cell on the Verge of Defeat! Krillin, Destroy Android 18!
Goku continues to train Gohan so he can become a Super Saiyan. Kuririn has found the Artificial Humans. Vegeta effortlessly overpowers Cell with the results of his training from the Room of Spirit and Time. Cell is furious that he hasn't achieved his perfect form and gives Vegeta an offer to fully test his strength.
About Dragon Ball Z Kai

Title: Dragon Ball Z Kai
First Air Date: 2009-04-05
Last Air Date: 2015-06-28
Status: Ended
Rating: 7.5/10 (from 773 votes)
Language: JA
Seasons: 7
Total Episodes: 158
Network: Fuji TV
Genres: Sci-Fi & Fantasy, Animation, Action & Adventure, Comedy
Production Companies: Toei Animation
Synopsis
Rejoin Goku and his friends in a series of cosmic battles! Toei has redubbed, recut, and cleaned up the animation of the original 1989 animated series. The show's story arc has been refined to better follow the comic book series on which it is based. The show also features a new opening and ending. In the series, martial artist Goku, and his various friends, battle increasingly powerful enemies to defend the world against evil. Can Earth's defender defeat demons, aliens, and other villains?
Cast

Masako Nozawa
Son Goku / Son Gohan / Son Goten (voice)

Joji Yanami
Narrator (voice)

Mayumi Tanaka
Krillin (voice)

Ryo Horikawa
Vegeta (voice)

Toshio Furukawa
Piccolo (voice)

Hiromi Tsuru
Bulma (voice)

Naoko Watanabe
Chi-Chi (voice)

Takeshi Kusao
Trunks (voice)

Toru Furuya
Yamcha (voice)

Masaharu Satô
Master Roshi (voice)