Merli (Meruri) is named after Merlinite (メルリナイト / Merurinaito), a type of stone known for its dual light and dark appearance. The stone itself being named after Merlin, a legendary figure best known as an enchanter or wizard featured in Arthurian legend and medieval Welsh poetry.

Just like her sister, Aoki Lapis, Merli is based off a "Magical girl" and is also a fairy. In contrast to Lapis', her ...