She is a vampire and her older sister is Remilia. Flandre is described as being quite strange and eccentric, which makes it difficult for others to understand her. She's also described as being "normally docile" and generally pleasant to be around, but somewhat of a loose cannon if left unwatched. A sassy snarker. Flandre has the ability to destroy anything. Flandre is able to clone herself as seen in one of her spell cards where she creates 3 clones that helps her in the battle.