Episode 836: The Mystery of Mama - The Island of Giants and the Little Beast
One Piece Episode 836 „The Mystery of Mama - The Island of Giants and the Little Beast“. Adapts chapters 865–866. First aired: 2018-05-13.
- Read on in the manga from: Chapter 867 (Volume 86 – Emperor Assassination Plan)
- Title (Japanese): マムの秘密 巨人の島(エルバフ)と小さな怪物
- Title (romaji): Mamu no Himitsu - Erubafu to Chīsana Kaibutsu
- First aired (Japanese): 2018-05-13
- First aired (German): 2021-04-12
- Category: Story
- Chapters adapted: Chapters 865, pages 17; Chapters 866