The Royal Dancer appears as a sub-boss found on the 201st floor of Tartarus in a group of three. They impede the party's progress and must be beaten to proceed. It later reappears as a normal enemy in the Adamah Block of Tartarus between floors 229 and 235. In The Answer, they will appear as red shadows in the first section of Caina within the Abyss of Time.
The Royal Dancer appears on B1 and B2 of the Secret Laboratory within the Midnight Channel. They will buff themselves with Matarukaja before attacking normally. Upon being defeated, they may drop the Yellow Cord material. Selling 10 Yellow Cords at Daidara will unlock the Wooden Ebisu accessory for sale in the shop.
In Golden, they may appear on B1F to B4F. They may also drop Milky Quartz.