Vampires are a species of Half breed which appear veined, pale and sickly. They grow supernumerary teeth and retract their hair as they shift into their true forms. Their facial structure resembles vampire bats.
Unlike lycans, vampires are never fought in-game during The Order: 1886. The first vampire encountered is a corpse at the London Hospital. Later, a vampire is killed by Lakshmi Bai at the shipping crates in the United India Company Docks.
Only one form of vampire is ever encountered. It's never specified if there are any other types.