Main character
Kouichi Hayase早瀬浩一
- appearances
- 3
- appearances
- main roles
- 3
- main roles

Kouichi Hayase at a glance
Kouichi Hayase is a main character in Kurogane no Linebarrels. He is 14 years old and 171 cm tall. His birthday is January 23, which makes him an Aquarius. He is voiced by Tetsuya Kakihara in Japanese and by Jessie James Grelle in the English dub.
Kouichi Hayase: quick facts
- Role
- Main character
- Age
- 14
- Birthday
- January 23
- Height
- 171 cm
- Gender
- Male
- Zodiac sign
- Aquarius
- First appearance
- Kurogane no Linebarrels (2008)
- Latest appearance
- Kurogane no Linebarrels Picture Drama (2009)
- Japanese name
- 早瀬浩一
- Japanese voice
Tetsuya Kakihara- English voice
Jessie James Grelle
Who is Kouichi Hayase?
Kouichi is a junior-high school student who dreams of being a hero someday. One day he encounters an accident in which a gigantic humanoid called “LINEBARREL” falls right out of the sky. He subsequently becomes what people refer to as a “Factor”, a pilot of the mecha whose life goes hand-in-hand with the life of the mecha he pilots. Kouichi obtains extraordinary physical strength as a result of becoming a Factor. This drastic change gives Kouichi excessive confidence, making him arrogant and aggressive.
Biography excerpt via Kitsu.
Kouichi Hayase in numbers
- Favourites on AniList
- 10
- fans who marked them a favourite
- Rank in Kurogane no Linebarrels
- #1
- of 23 characters, by favourites
- Appearances
- 3
- 3 as a main character
- On screen
- 2008–2009
- 2 years
Most-loved characters in Kurogane no Linebarrels
AniList favourites
- Kouichi Hayase10
- Emi Kizaki10
- Reiji Moritsugu5
- Miu Kujou4
- Yui Ogawa4
- Makoto Doumyouji3
- Shizuna Endo2
- Izuna Endo1
Show as table
| Item | Favourites |
|---|---|
| Kouichi Hayase | 10 |
| Emi Kizaki | 10 |
| Reiji Moritsugu | 5 |
| Miu Kujou | 4 |
| Yui Ogawa | 4 |
| Makoto Doumyouji | 3 |
| Shizuna Endo | 2 |
| Izuna Endo | 1 |
Appearances by format
3 titles in total
- Special2 · 67%
- TV Series1 · 33%
Appearances
More characters from Kurogane no Linebarrels
Kouichi Hayase FAQ
What anime is Kouichi Hayase from?
Kouichi Hayase is a main character in Kurogane no Linebarrels and appears in 3 titles in total, including Kurogane no Linebarrels Specials and Kurogane no Linebarrels Picture Drama.
How old is Kouichi Hayase?
Kouichi Hayase is 14 years old.
How tall is Kouichi Hayase?
Kouichi Hayase is 171 cm tall.
When is Kouichi Hayase's birthday?
Kouichi Hayase's birthday is January 23.
Who voices Kouichi Hayase?
Kouichi Hayase is voiced by Tetsuya Kakihara in Japanese and by Jessie James Grelle in the English dub.
What is Kouichi's full name?
Kouichi's full name is Kouichi Hayase (早瀬浩一 in Japanese).
What is Kouichi Hayase's zodiac sign?
Kouichi Hayase is an Aquarius: his birthday is January 23.
When did Kouichi Hayase first appear?
Kouichi Hayase first appeared in Kurogane no Linebarrels (2008) and most recently appeared in Kurogane no Linebarrels Picture Drama (2009).
What is Kouichi Hayase's Japanese name?
Kouichi Hayase is written 早瀬浩一 in Japanese.
Where can I watch Kouichi Hayase?
Open the Kurogane no Linebarrels page for licensed streaming links and the full episode list.














