Boiuna

Amazonian myth of indigenous origin, described as a giant snake capable of capsizing boats

Boiuna (translated as "Black Snake") is a mythological creature in Brazilian mythology. It is also known as the Cobra-Grande (translated as "Large Serpent") and the Mboiaçu.

Mythology

The Boiuna is a nocturnal black snake creature which is the most powerful creature of the rivers within the Amazon rainforest. It can take on various shapes in order to frighten away any fishermen that enter its territory. Some of the forms the Boiuna can take on are a canoe, a sailboat, a transatlantic^{[clarification needed]}, and a woman.

In popular culture

The Boiuna appears in The River. Initially, it was portrayed as an uncharted stretch of the Amazon river that curves through the jungle like a snake's coils, and it's home to all manners of paranormal occurrences: "The further we go up the Boiuna, the further the laws of physics breaks down" as one character states. Later, it is revealed that the Boiuna is actually the evil life force of the river itself, and the series ends with the very river changing shape to prevent the characters from leaving, trapping them in the jungle for all eternity.
The Boiuna also appears in AdventureQuest Worlds. This version of the Boiuna is a recolored version of Snake. It is among the creatures that attack Terra da Festa before the Carnaval Party.