Lym is a young demon with a black beanie, blue eyes and short blond hair. She wears a black jacket with a yellow shirt underneath. Under her beanie she sports the same bat wings on her head that the rest of her family has.
She is first seen traveling with Lake in search for Salt. During the class trip she is trapped with Lake in a hole in the cave, Alba bursts through with the help of Rchimedes II, it is then revealed she is his daughter and Ruki's sister. Afterwards she is brought back to the
Lym seems to be adept at sensing magical presences.
Her father tends to get Lonely without her around.
- Lym's name is from Olympic without the O. Like "ARchimedes" without the A.