Kouichi Nagano

2020s

1. 2022
   

   One Piece Film Red

   Helmeppo (voice)

   75

2010s

1. 2019
   

   One Piece: Stampede

   Helmeppo (voice)

   81
2. 2017

   One Piece Episode of East Blue

   Helmeppo (voice)

3. 2012
   

   One Piece: Episode of Luffy - Hand Island Adventure

   Helmeppo (voice)

   72
4. 

   One Piece Film: Z

   Helmeppo (voice)

   76
5. 2011
   

   Hunter x Hunter

   Goz (voice), Rodriot (voice), Montreux (voice) · 2 episodes

   89

2000s

1. 2009

   Asylum Session

   Superintendent (voice)

2. 2005
   

   Mushi-Shi

   Man (voice) · 1 episode

   84
3. 

   Capeta

   Shigeyoshi Kumada (voice) · 52 episodes

   81
4. 

   Eyeshield 21

   Ryokan Kurita, Satoshi Muro · 145 episodes

   78
5. 2003

   Mazinkaiser vs Great Darkness General

   General Ligern / Mucha / Professor Sewashi (voice)

6. One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!

   Max (voice)

7. 2002
   

   One Piece: Dream Soccer King!

   Helmeppo (voice)

   66
8. 2001
   

   Mazinkaiser

   Professor Sewashi (voice) · 8 episodes

9. 

   Salaryman Kintaro

   Ichiro Maeda (voice) · 20 episodes

10. 2000

    Baby Felix & Friends

    Master Cylinder

1990s

1. 1999
   

   One Piece

   Helmeppo (voice) · 10 episodes

   89
2. 

   Dual! Parallel Trouble Adventure

   Naoya Shiozaki · 14 episodes

3. 

   Kyuukyuu Sentai GoGoFive

   Puppetongue (voice) · 1 episode

   68
4. 1998

   Chousoku Spinner

   Hyper DJ · 22 episodes

5. 1997

   Bakusō Kyōdai Let's & Go!! WGP Bōsō Mini Yonku Dai Tsuiseki!

   Hikoza Mizusawa

6. Let's & Go! WGP The Great Pursuit of the Berserk Mini 4WD car!

   Movie

7. 1996

   Mutant Turtles: Superman Legend

   News Technician (voice) · 2 episodes