This list is for Worst Japanese voice acting that were in Anime. This list focuses on the Voice Acting and Voice Direction in the Japanese version of the Anime.
The Top Ten
Oh black clover you could the next big thing well I guess there still the manga to read
Asta's scream became really annoying and it does have bad voice acting in the Japanese version. - KingMarth64
3Dragon Ball Series (690+)
4Higurashi When They Cry
5Naruto Series (660+)
A.K.A. Naruto Shippuden, yo, this japanese SUCKS!
6Yu Yu HakushoYu Yu Hakusho is a manga franchise created by Yoshihiro Togashi. An anime adaptation consisting of 112 television episodes was directed by Noriyuki Abe and co-produced by Fuji Television, Yomiko Advertising, and Studio Pierrot. The television series originally aired on Japan's Fuji TV network from October ...read more.
7One PieceOne Piece is a manga franchise created by Eiichiro Oda. The manga has been adapted into an original video animation (OVA) produced by Production I.G in 1998, and an anime series produced by Toei Animation, which began broadcasting in Japan in 1999 and has aired 851 episodes to date.
Some of the voice acting in the Japanese version still pretty far off such as Roronoa Zoro sounded more like a Gang Thug, Franky doesn't sound strong and his voice sounds weird for a tough Cyborg, and the voice direction for Sanji sounded more like in his 40s or above than early 20s. - KingMarth64
8Yamada's First Time: B Gata H Kei
Yamada sounded more like a Grade Schooler than a High School student in the Japanese version. - KingMarth64
9Jojo's Bizarre AdventureJojo's Bizarre Adventure is an anime and manga franchise originally written by Hirohiko Araki. It centers around the perilous journey of the members of the legendary Joestar bloodline.
10Sailor MoonSailor Moon is a Japanese shōjo manga series by Naoko Takeuchi. It was originally serialized in Nakayoshi from 1991 to 1997; the 52 individual chapters were published in 18 tankōbon volumes. ...read more.
11Sonic XSonic X is a Japanese anime television series created by TMS Entertainment and based on the Sonic the Hedgehog video game series published by Sega.
Yes this show is bad both on the Japanese and both on the English Dub.
12Mars of Destruction
13Death NoteDeath Note is a Japanese television drama series based on the manga series of the same name by Tsugumi Ohba and Takeshi Obata.
The show is centered around Light Yagami a promising highschooler and aspiring detective with a strong sense of "justice".
I like death note but everybody hate death note’s original Japanese all Time and the original Japanese is still bad.
14Cowboy BebobCowboy Bebop is a 1998 anime television series animated by Sunrise featuring a production team led by director Shinichirō Watanabe, screenwriter Keiko Nobumoto, character designer Toshihiro Kawamoto, mechanical designer Kimitoshi Yamane, and composer Yoko Kanno.
This anime’s Japanese talk was just out of his voicing, why?
One Thing: "Sa" Again And Again in every sentence.