The River Devil is a black, tree-like creature that blocks the single north-south road of Eastern Hyrule in The Adventure of Link.
Though citizens of Nabooru speak of the River Devil in fear, he does not attack, and serves merely as an obstruction. The only way to pass him is to play the Flute found in the Palace on the Sea.
- The River Devil has a different design in the Japanese Famicom Disk System version of the game, directly based on a traditional Oni.
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The River Devil as seen in-game from The Adventure of Link
The River Devil as seen in-game from the Japanese version of The Adventure of Link