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Vampires (吸血鬼 kyūketsuki) are creatures usually from Western folklore that drink the blood of humans to survive. They possess a number of powerful abilities, including super-strength, super-speed, summoning demons, transforming into a swarm of bats, and regeneration. They also have a lot of weaknesses, including sunlight (which is why vampires are usually active at night) and flowing water (such as rain or a river). There are many vampire equivalents like Jiang Shi from Asian folklore, although they are only similar, not the same.
Vampires in Touhou
Vampires are a species of Youkai and considered to be a type of Devil in Gensokyo. They are apparently a relatively new race, and it is stated in Perfect Memento that the only vampires in Gensokyo are Remilia Scarlet and Flandre Scarlet, to the point where most characters just simply refer to Remilia as "the vampire" instead of by name. In Gensokyo, vampires, like oni, are vulnerable to roasted soybeans. Despite the number of weaknesses, people who plan to fight vampires should not exploit their weaknesses carelessly. Vampires can get around their weakness over the sun by using shading objects such as parasols. Fortunately, when not causing an incident vampires tend to be polite (if not also self-centered).
There is a contract between vampires and other youkai where the vampires do not attack the humans of Gensokyo and the youkai bring them humans for them to feed on. Being a devil's contract, it is unbreakable. An unnamed vampire (who may or may not have been Remilia) is the primary instigator of the incident that led to the creation of this contract and eventually the spell card rules.
Characters under this Bestiary
Books and articles
Wikipedia entry for Vampire