She wears a qipao with a leg cut that goes past the waist, under which she wears tight-fitting spats.
Lanlan has a teasing personality, taunting her foes while fighting and evading them. She calls Lancer "Sensei".
Lanlan Fan steals a magic ore that was supposed to be delivered to a magus of the German Third Reich in Japan. When stealing said magic ore, she encounters Yan of the Lone Sword and a number of enemy street thugs, who try to fight and stop her. Afer dispatching some of them using magecraft, Lanlan allows her Servant, Lancer, to deal with the rest of her enemies.
She uses Magecraft with the help of FuluWP talismans to invoke various effects just like spells. For example, she can make targets burn by applying a talisman to it and activate the effect with the word "Bào (暴?)". Her magecraft is said to be Taoist in origin.