Acheron, also romanized as Archelon, may refer to:
- The enemy from Final Fantasy III.
- The enemy from Final Fantasy V.
- The enemy from Final Fantasy XIV.
- The character from Final Fantasy XIV, known as Acheron before version 2.3.
- The enemy from Mobius Final Fantasy.
Acheron was known as the river of woe, and was one of the five rivers of the Greek underworld.In ancient Greek mythology,
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