The Rosetta Stone Characters are a group of four characters from the popular video game series, Rosetta Stone. The characters are ETAS, which stands for Energetic, Technical, Analytical, and Social. Each character has their own unique set of skills and abilities that they use to solve puzzles and progress through the game. ETAS is the main protagonist of the series, and the other three characters are his companions. Together, they work together to complete the various tasks and challenges presented in the game.