Synopsis
Astro is a robotic boy created by Dr. Tenma to replace his late son. When Tenma destroys his laboratory and shuts down Astro, the Ministry of Science revives him and tries to give him a normal life as a 6th-grade student who occasionally helps keep renegade robots from causing harm.
Series Information
- First Aired
- 2003
- Last Aired
- 2004
- Seasons
- 1
- Episodes
- 50
- Episode Length
- 24 min
- Genre
- Animation, Action & Adventure, Sci-Fi & Fantasy, Family, Comedy, Kids
- Network
- Fuji TV, Kansai TV, Hokkaido Cultural Broadcasting, Sendai Television, SAGA TV, TNC, Kochi Sun Sun Broadcasting, TV Shizuoka, UMK TV Miyazaki, NST, Fukushima TV, KTN
- Status
- Ended
- Rating
- 7.9 / 10 (23 votes)
Top Cast
Makoto Tsumura
Atom (voice)
Miki Maruyama
Uran (voice)
Hisashi Katsuta
Ochanomizu Hakase (voice)
Shin'ya Ohwada
Nagamiya Tenma (voice)
Kazuo Kumakura
Higeoyaji (voice)
Ready to watch Astro Boy?
All seasons & episodes — free, HD, no signup.
▶ Watch Astro Boy FreeSimilar Shows
Star Wars: Droids
1985 ★ 5.4
Amuri in Star Ocean
2008 ★ 8.0
Jewelpet
2009 ★ 8.0
Babysitter Gin!
2019 ★ 8.0
Azur Lane
2019 ★ 7.5
Chillin' in My 30s After Getting Fired From the Demon King's Army
2023 ★ 7.5
Black Jack Special: The 4 Miracles of Life
2003
Go for It, Nakamura-kun!!
2026 ★ 9.3
Ave Mujica - The Die Is Cast -
2025 ★ 7.6
Let's Go Karaoke!
2025 ★ 7.4
Captivated, by You
2025 ★ 8.2
Whistle!
2002 ★ 8.6
Saber Marionette R
1995 ★ 6.6
Gaist Crusher
2013
You May Also Like
Astro Boy
1963 ★ 7.3
Astro Boy
1980 ★ 7.8
Doraemon
1979 ★ 7.7
Voltron: Legendary Defender
2016 ★ 7.3
Earthworm Jim
1995 ★ 7.3
Doraemon
2005 ★ 8.1
The Zeta Project
2001 ★ 7.5
Big Hero 6 The Series
2017 ★ 7.6
Transformers: Armada
2003 ★ 7.4
Transformers: Rescue Bots
2012 ★ 7.3
Iron Man: Armored Adventures
2009 ★ 7.3
Sonic Boom
2014 ★ 7.5
Zoids: Chaotic Century
1999 ★ 8.6
Metallic Rouge
2024 ★ 7.1
More Animation Series
The Simpsons
1989 ★ 8.0
American Dad!
2005 ★ 7.0
Family Guy
1999 ★ 7.4
Teen Titans Go!
2013 ★ 6.4
Rick and Morty
2013 ★ 8.7
Regular Show
2010 ★ 8.6
Bleach
2004 ★ 8.4
Adventure Time
2010 ★ 8.5
Miraculous: Tales of Ladybug & Cat Noir
2015 ★ 8.1
Mushoku Tensei: Jobless Reincarnation
2021 ★ 8.4
South Park
1997 ★ 8.3
The Fairly OddParents
2001 ★ 7.6
Hunter x Hunter
2011 ★ 8.7
Futurama
1999 ★ 8.4
More with Makoto Tsumura
Sazae-san
1969 ★ 7.0
Zenki
1995 ★ 8.0
Saiyuki
2000 ★ 6.3
Hikaru no Go
2001 ★ 7.8
Ghost Stories
2000 ★ 8.2
Digimon Fusion
2010 ★ 8.2
Kamichu!
2005 ★ 7.9
Digimon Tamers
2001 ★ 8.6
Paranoia Agent
2004 ★ 7.9
HeartCatch PreCure!
2010 ★ 8.7
Neo Ranga
1998 ★ 6.0
Uninhabited Planet Survive!
2003 ★ 7.9
Viewtiful Joe
2004 ★ 8.8
Inukami!
2006 ★ 5.5
Trending Now
Silo
2023 ★ 8.2
The Gentlemen
2024 ★ 7.8
The Grand Tour
2026 ★ 9.6
Lanterns
2026 ★ 8.3
Reacher
2022 ★ 8.1
Ted Lasso
2020 ★ 8.4
Dark Matter
2024 ★ 7.8
The Early Spring
2026 ★ 7.6
Furious
2026 ★ 7.2
One Piece
1999 ★ 8.7
Chad Powers
2025 ★ 8.0
Re:ZERO -Starting Life in Another World-
2016 ★ 8.1
Lioness
2023 ★ 8.1
Stuart Fails to Save the Universe
2026 ★ 9.0
Popular This Week
Watch What Happens Live with Andy Cohen
2009 ★ 4.9
The Mentalist
2008 ★ 8.4
Coronation Street
1960 ★ 5.4
Home Alone
2013 ★ 7.5
The Tonight Show Starring Jimmy Fallon
2014 ★ 5.8
Law & Order: Special Victims Unit
1999 ★ 8.0
The Late Show with Stephen Colbert
2015 ★ 6.1
Criminal Minds
2005 ★ 8.3
El conquistador
2005 ★ 5.7
The Tonight Show Starring Johnny Carson
1962 ★ 7.5
Tagesschau
1952 ★ 6.8
The Rookie
2018 ★ 8.5
Game of Thrones
2011 ★ 8.5
Sesame Street
1969 ★ 7.1
Explore related titles
Frequently Asked Questions
Where can I watch Astro Boy online for free?
You can watch every season and episode of Astro Boy online for free in HD on FreeFlix. No signup required.
How many seasons of Astro Boy are there?
Astro Boy has 1 season and 50 episodes, all available on FreeFlix.
Is Astro Boy available in HD?
Yes, all episodes of Astro Boy stream in HD with multiple backup sources.
Do I need an account or subscription?
No. FreeFlix is 100% free with no registration, payment, or account required.