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Gate Keepers 21 2002

★ 5.5/10 · 4 votes TV-PG AnimationAction & AdventureSci-Fi & FantasyDrama 1 seasons · 6 eps Ended
Community & Your Rating
★ 5.5/10
Where to watch: U-NEXTAnime Times Amazon ChanneldAnime Amazon ChannelAmazon VideoAmazon Prime Video
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Quick answer

What is Gate Keepers 21?

Gate Keepers 21 is a television series released in 2002. The story takes place thirty two years after the defeat of the Invaders, a period during which the organization known as A.E.G.I.S.

Type
TV series
Year
2002
Status
Ended
Episodes
6
Runtime
26 minutes
First aired
Apr 24, 2002
Last aired
Jan 8, 2003
Original language
JA
Origin
JP
Genres
Animation, Action & Adventure, Sci-Fi & Fantasy, Drama
Updated
Streaming Intelligence

Binge-Worthiness & Content Radar

84 /100 Solid Watch
⚡ Pacing & Momentum8/10
🧠 Narrative Depth8.5/10
🔄 Rewatch Potential8.9/10
🎬 Production Scale8.2/10
🎯 Bingeable Series #Animation #Action & Adventure #Sci-Fi & Fantasy
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Overview

Gate Keepers 21 is a television series released in 2002. The story takes place thirty two years after the defeat of the Invaders, a period during which the organization known as A.E.G.I.S. has been dismantled. In this era, only a small number of Gate Keepers remain to protect the world. The plot follows a character named Ayane Isuzu, who is identified as one of the few remaining Gate Keepers. As the narrative progresses, Isuzu discovers that the antagonists known as Machine General and Devil Count have returned to threaten humanity. Faced with these recurring enemies, the Gate Keepers must mobilize once again to save the Earth from destruction. The series focuses on the efforts of these individuals as they confront the resurfacing threat long after the original conflict concluded. By documenting the return of these specific foes and the response of the remaining members of the former organization, the series explores the necessity of defending the planet against renewed hostile forces in a changed world.

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Should you watch it?

“A veteran Gate Keeper returns to battle revived foes thirty‑two years after the original war.”

Reasons to watch
  • Continues the original’s mythos with new stakes
  • Animated action with sci‑fi flair
Keep in mind
  • May rely on prior series knowledge
  • Animation style feels dated

Watch it if you enjoyed the original Gate Keepers and like sequel‑driven sci‑fi action.

The series is rated TV‑PG, featuring fantasy combat and mild peril suitable for older children and teens.

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Mytharc (3): Crucial lore & season climaxes
Core (3): Character development & subplots
Side Quest (0): Standalone / filler
Season 1 · 6 episodes
Verified insights

Frequently asked questions

What is the time gap between the original series and Gate Keepers 21?

It is set thirty‑two years after the Invaders were defeated.

Who is the main protagonist?

The story follows Ayane Isuzu, one of the remaining Gate Keepers.

Are original characters present?

Characters such as Reiji Kageyama and Yukino Houjo appear, linking the sequel to the original.

What genre does the series belong to?

It is an animated series blending action, adventure, sci‑fi, fantasy, and drama.

What rating does the series have?

It carries a TV‑PG rating, indicating content suitable for older children.

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