Episode 556: First Showing! Sunny's Secret Weapons!
One Piece Episode 556 „First Showing! Sunny's Secret Weapons!“. Adapts chapters 634–636. First aired: 2012-07-15.
- Read on in the manga from: Chapter 637 (Volume 65 – To Zero)
- Title (Japanese): 初披露! サニー号の秘密兵器!
- Title (romaji): Hatsu Hirō! Sanī-gō no Himitsu Heiki!
- First aired (Japanese): 2012-07-15
- First aired (German): 2017-08-30
- Category: Story
- Arc: Fish-Man Island Arc
- Chapters adapted: Chapters 634, pages 14, 19; Chapters 635, pages 5-6, 12-19; Chapters 636, pages 2