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One Piece S01E18, You're the Weird Creature! Gaimon and His Strange Friends!S01E18

One Piece · Season 1

One Piece season 1 episode 18: You're the Weird Creature! Gaimon and His Strange Friends!

Aired 15 March 200025 minRated M

6.9TMDB · 28 votesMark watched

Where to watch One Piece Season 1 in Australia

One Piece season 1 is streaming in Australia on Netflix (subscription).

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Stream (subscription)

Availability checked 16 November 2026.

What happens in “You're the Weird Creature! Gaimon and His Strange Friends!”

With Usopp now in the crew and a new ship, the Going Merry, under their command, the Straw Hats head to an island said to hold a fabled treasure, only to encounter a strange man stuck in a treasure box that has also been looking for this treasure.

Episode summary: TMDB.

Before you watch

  • It is episode 18 of 61 of season 1, so watch episodes 1 to 17 first.
  • It runs about 25 minutes.
  • TMDB users rate it 6.9 out of 10 (28 votes).

One Piece trailer

The official trailer for the series (no preview of this episode has been published).

One Piece trailerPlay video: One Piece trailer

Cast and crew of this episode

Guest stars
Tōru Ōhira as Gaimon (voice)

Credits: TMDB.

More from One Piece Season 1

Previous · S01E17Anger Explosion! Kuro vs. Luffy! How it Ends!8 March 2000Next · S01E19The Three-Sword Style's Past! Zoro and Kuina's Vow!22 March 2000
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Every episode of Season 1One Piece episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.