Atlasia Sion Eltnam is a fictional character associated with the Melty Blood series, known as an alternate or related form of Sion Eltnam Atlasia. She is depicted as a serious, capable young woman with strong ties to the occult and scientific conflicts surrounding the setting. In the series, she serves as a combat-oriented character who reflects the darker, more complex side of the Eltnam name, often appearing as a variant connected to different timelines or interpretations of Sion.