Retratos de los inmortales/Do they exist?

Romulus and Remus:

They were werewolves, who founded the empire of Rome via conquest. A vampire known as Scorn appeared at this time, becoming involved in the wars of Rome. Scorn was often mistaken as the incarnation of Roman God Mars (Greek: Ares) due to his war-like attitude. Scorn conquered many lands, and an alliance with many other vampires, was formed. These fiends terrorized the humans, until a powerful and nameless human began to weaken the vampires, and condemned them to a life of exile, while other terrified people began to follow his lead. The Roman Catholic Church comes into play now, as the force that kept the vampires exiled, and the city safe.

Incubus and Succubus:

Both of European origin are sexual beings, the Incubus the male, and Succubus the female. The Incubus is known to visit women nightly, and drain them of life and strength. It is said that if an Incubus should visit you, it will haunt your dreams. Incubus vampires can father children. Succubus vampires are female, who visit men nightly for sexual relations, and haunt their dreams, rendering a victim totally exhausted.

The Talamaur:

A living form of the vampire, originating in Australia. It is said the Talamaur can communicate and summon spirits, and that it feeds on the remaining life force of a fresh corpse by eating the flesh.

The Strigoii is by far the most famous vampire, of Romanian descent. It is dead, and feeds on the blood of the living, often participating in sexual acts with human females. 

Lilith:

In the book of Genesis (Holy Bible), a woman who once shared Eden with Adam is spoken of. Her name is believed to be Lilith, though her name is only mentioned once in the bible (Isaiah 34:14), and she is spoken of once in the Jewish Torah. 

Originally, Lilith was Adam’s wife. She was not made from Adam, rather she was created as an equal of Adam’s, and was given free will in Eden. Lilith and Adam argued frequently, and Lilith refused to make love with Adam, who demanded her lay on her back during intercourse. For this, Adam became angry with God, and demanded a woman created in his likeness. God punished Lilith for her disobedience by forbidding her and any offspring that should come of her from eating from the Tree Of Knowledge. Enraged after a time, Lilith began to eat from the tree again.Lilith escaped the Garden of Eden. Once out of the garden, she took up the habit of sleeping with a different man every night.

When Lilith heard of Adam’s new wife Eve, she became fearful that if they had offspring, Adam would send them to seek revenge. Lilith became paranoid, and quite fearful of children. Due to this phobia, she resorted to cannibalism, devouring innocent children, cursing them as well. 

This story is believe to be the explanation as to why women are cursed with monthly bloodletting; hence many believe the myths of vampires were born from this legend.

Vrykolakas: 

In Greek folklore, vampirism could occur through various means: being excommunicated, desecrating a religious day, committing a great crime, or dying alone. Other causes included having a cat jump across one's grave, eating meat from a sheep killed by a wolf, and being cursed. Vrykolakas were usually thought to be indistinguishable from living people, giving rise to many folk tales with this theme. Crosses and antidoron (blessed bread) from the church were used as wards in different places. To prevent vampires from rising from the dead, their hearts were pierced with iron nails while resting in their graves, or their bodies burned and the ashes scattered. Because the Church opposed burning people who had received the myron of chrismation in the baptism ritual, cremation was considered a last resort. (Wikipedia)