Creatures of the night, the vampires
cannot walk under sun light, they need to drink
blood to support their unlife and they can just
be terminated either by cutting their heads off
or by having a wooden stake through their
hearts. To enter a house, they need to be
invited by its owners and they usually sleep in
coffins.
However, each creator can create
his/her own rules...
Buffyverse
In Whedon's universe, vampires can
walk in the day light, as long as they remain
in the shadows.
They are creatures of the night, but
they don't need to sleep during the day (they
do, if they want - vampires get tired, too).
And they don't need to sleep in coffins,
either.
To attack their victims, they put
their "games faces" - pointy teeth and lumpies
on the forehead.
They do need to drink blood to
survive (human's or animal's). If they don't
drink, they don't die, but they have very bad
withdrawals and/or start hallucinating, until
they are to weak for any reaction.
Their images don't have reflection
in the mirror, but they can be photographed.
They have super strength and they
can eat and drink, although they don't need
it. Those who give up killing people, like to
drink blood mixed with roots, milk or alcohol
sometimes.
They can trim their hair (it grows
back), they don't have blood circulation,
their hearts don't beat, but they bleed and
the men can have sex. They don't have souls -
excepting Angel (who was cursed with one) and
Spike (who choose to have one).
To become a vampire, one must be
bitten and sucked almost dry, almost to death;
then, the victim must drink the vampire's
blood. The vampire-to-be doesn't need to be
buried; however, some "traditionalist"
vampires - like [Drusilla]
- like the complete rituals. Usually, a bond
is created between the Sire (the one who bite)
and the Childe (the one who is bitten) -
Darla/Angel, Angel/Drusilla, Drusilla/Spike,
Angel/Ben - but it isn't a rule. [Harmony]
didn't have any bond with her (unknown) Sire,
for instance.
Literature
Movies
TV
*Also Dracula
on episode Buffy vs Dracula
TV Shows
Animated Series