Draco is a Beast-class servant from Fate Grand Order. She is the juvenile form of Beast VI/S, reincarnated as a Beast servant. While Beast Ⅵ has no particular desire to bloom a second time, she has remained behind in order to witness with her own eyes the fate of the humans who overthrew her (whether it be ruin, or glory). It appears as though she has a strong sense of responsibility. One of the two horns of Beast VI. A Beast once defeated by a Chaldea in a parallel world. Born from Depravity, it is said to manifest when the most prosperous city of an era reaches its zenith, so that it may savor its malignancy. It is the Beast from the New Testament that is said to have destroyed Babylon. Known as the "Beast of 666" and the "Enemy of God", it is said that she is the Beast that a certain Roman Emperor became. She is born from a "what-if" where Nero did not meet her end alone after witnessing that thrice setting sun.

Despite her initial form, her appearance changes between her 3 ascensions. Her first ascension consists of her barefoot and clad in a red flowing dress. Her 2nd ascension has her now garbed in 2 crown shaped shoulder pads likely for aesthetic while also brandishing red claws in her right arm, her dress also becomes thin fabric leaving not much to the imagination. Her final ascension gives her a more mature body garbed in black tights covered in dark armor, her hair being longer and having black horns on her head, she also wields a flaming sword in that ascension.