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Giant Robo: Prologue-hen
Synopsis & Story
The pilot for GR: Giant Robo. However, there were significant changes between the pilot and the actual show, including a different writer and a different director. Thus, the special is less a promo for the series than an alternate version of how the series might have looked. Included in the GR: Giant Robo Millennium Box DVD Set.
Trailer
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Aniphoria guide
Giant Robo: Prologue-hen: should you watch it?
At a glance
Giant Robo: Prologue-hen has been poorly received, with an average AniList score of 52/100 — 13% of 115 ratings are 8/10 or higher.
Of the 229 AniList users who started it, 7.4% dropped it, so it is dropped at a typical rate; 199 have finished it.
At about 4 minutes in total, it is a short commitment — a weekend binge.
Best for viewers who enjoy Action, Mecha.
Where it fits in the series
- Optional extras: GR: Giant Robo
Main cast & creators
- Original creator
- Mitsuteru Yokoyama
Giant Robo: Prologue-hen FAQ
- How many episodes does Giant Robo: Prologue-hen have?
- Giant Robo: Prologue-hen has 1 episodes of about 4 minutes each, roughly 4 minutes in total.
- Is Giant Robo: Prologue-hen finished?
- Yes. Giant Robo: Prologue-hen has finished airing — the final episode aired July 27, 2007.
- Is there a season 2 of Giant Robo: Prologue-hen?
- No sequel is listed for Giant Robo: Prologue-hen as of October 2026. You can continue the story in the original manga.
- Is Giant Robo: Prologue-hen based on a manga?
- Yes. Giant Robo: Prologue-hen adapts the manga by Mitsuteru Yokoyama.