The following article is based on a subject that has not been officially named in any official Square Enix material; the current title is merely a placeholder.
Nereid is an enemy family in Final Fantasy Dimensions. They appear as female dancers with Greek-style attire. The Sworddancer uses a different template to the other enemies as she wields a sword in her left hand.
The enemy name "Super Grenade" is a mistranslation, and the enemy's name in Japanese is "High Nereid".