Character
Ryoutarou Tsuboi壷井 遼太郎
- birthday
- November 28
- birthday
- appearances
- 6
- appearances
- main roles
- 0
- main roles

Ryoutarou Tsuboi at a glance
Ryoutarou Tsuboi is a supporting character in Sword Art Online. He is 22 years old. His birthday is November 28, which makes him a Sagittarius. He is voiced by Hiroaki Hirata in Japanese and by Kirk Thornton in the English dub.
Also known as Klein.
Ryoutarou Tsuboi: quick facts
- Anime
- Sword Art Online
- Role
- Supporting character
- Age
- 22
- Birthday
- November 28
- Gender
- Male
- Zodiac sign
- Sagittarius
- Also known as
- Klein
- First appearance
- Sword Art Online (2012)
- Latest appearance
- Sword Art Online Movie: Ordinal Scale (2017)
- Japanese name
- 壷井 遼太郎
- Japanese voice
Hiroaki Hirata- English voice
Kirk Thornton
🎂 Everyone born on November 28Full Sword Art Online cast📏 Sword Art Online ages & heights👤 Most popular characters
Who is Ryoutarou Tsuboi?
A friendly player that meets Kirito at the start of the game and quickly befriends and learns from him. He and Kirito later separate because he has friends who were also new to the game so he couldn't leave them. He survives for the past two years and managed to protect his friends the whole time, something Kirito regretted not doing. He is a katana user and the leader of the small guild Fuurinkazan who participates in the boss battles. As one of the few people close to Kirito, he always keeps him in check and wants Kirito to survive the game. He chose the Salamader race in Alfheim Online. In the side story Caliber, he fell in love at first sight with the girl on the cage named Freyja and agreed that he will help her find her tribe's treasure which is a hammer, though the decision still remains to be a team's decision. The team said yes on Caliber and it turned out that the girl they saved was Thor. It was revealed that Thor disguised as a beautiful girl to get close to Giant King Þrym and retrieve his hammer. Thor defeated Giant King Þrym and that stopped the medallion from being corrupted and ending the quest.
Ryoutarou Tsuboi in numbers
- Favourites on AniList
- 814
- fans who marked them a favourite
- Rank in Sword Art Online
- #5
- among its characters, by favourites
- Appearances
- 6
- 0 as a main character
- On screen
- 2012–2017
- 6 years
Most-loved characters in Sword Art Online
AniList favourites
- Asuna Yuuki10,131
- Kazuto Kirigaya8,870
- Yui1,169
- Suguha Kirigaya1,151
- Ryoutarou Tsuboi814
Show as table
| Item | Favourites |
|---|---|
| Asuna Yuuki | 10,131 |
| Kazuto Kirigaya | 8,870 |
| Yui | 1,169 |
| Suguha Kirigaya | 1,151 |
| Ryoutarou Tsuboi | 814 |
Appearances by format
6 titles in total
- Special3 · 50%
- TV Series2 · 33%
- Movie1 · 17%
Appearances per year
New titles featuring them
Show as table
| Item | Titles |
|---|---|
| 2012 | 2 titles |
| 2013 | 1 title |
| 2014 | 2 titles |
| 2015 | 0 titles |
| 2016 | 0 titles |
| 2017 | 1 title |
Appearances

Sword Art Online
TV Series · 2012 · supporting

Sword Art Online: Sword Art Offline
Special · 2012 · supporting

Sword Art Online: Extra Edition
Special · 2013 · supporting

Sword Art Online: Sword Art Offline - Extra Edition
Special · 2014 · supporting

Sword Art Online II
TV Series · 2014 · supporting

Sword Art Online Movie: Ordinal Scale
Movie · 2017 · supporting
More characters from Sword Art Online
Ryoutarou Tsuboi FAQ
What anime is Ryoutarou Tsuboi from?
Ryoutarou Tsuboi is a character in Sword Art Online and appears in 6 titles in total, including Sword Art Online: Sword Art Offline and Sword Art Online: Extra Edition.
How old is Ryoutarou Tsuboi?
Ryoutarou Tsuboi is 22 years old.
When is Ryoutarou Tsuboi's birthday?
Ryoutarou Tsuboi's birthday is November 28. See every anime character born on November 28 on AniLumi's birthday page.
Who voices Ryoutarou Tsuboi?
Ryoutarou Tsuboi is voiced by Hiroaki Hirata in Japanese and by Kirk Thornton in the English dub.
What is Ryoutarou's full name?
Ryoutarou's full name is Ryoutarou Tsuboi (壷井 遼太郎 in Japanese). Ryoutarou Tsuboi is also known as Klein.
What is Ryoutarou Tsuboi's zodiac sign?
Ryoutarou Tsuboi is a Sagittarius: his birthday is November 28.
When did Ryoutarou Tsuboi first appear?
Ryoutarou Tsuboi first appeared in Sword Art Online (2012) and most recently appeared in Sword Art Online Movie: Ordinal Scale (2017).
What is Ryoutarou Tsuboi's Japanese name?
Ryoutarou Tsuboi is written 壷井 遼太郎 in Japanese.
Where can I watch Ryoutarou Tsuboi?
Open the Sword Art Online page for licensed streaming links and the full episode list.











