Bite Size Monster Dictionary
A creature known in literature to look exactly like someone else. Anyone who sees this creature typically dies within a few days, and it identity remains a mystery. In German the name means "one who walks double".
Appearance
Their appearance, as previously mentioned, is highly variable. Trying to state all their possible forms is thus obviously impossible. They do have a tendency to prefer hominid guises of about 6 feet (1.8 m) in average height.
Powers & Abilities
It can copy the physical form of anyone it comes into contact with. While in the copied form, it can used any and all powers its physical form possesses. It has been shown in Rosario + Vampire II Chapter 006 that Döppelgangers can combine copied forms to gain access to all the forms' powers.