Please describe the main characters in The Graveyard Book by Neil Gaiman?

In Neil Gaiman's The Graveyard Book,
the central character is Bod, which is short for "Nobody." His last name is Owens, named
for the married ghost-couple that agrees to raise him.

When
he is a baby, Bod's parents and sister are murdered, but Bod has innocently wandered
away (losing his diaper on the way) from the scene of the murder before the killer can
dispose of him as well.

Mrs. Owens never had children of
her own. The spirit of Bod's dead mother appears as the murderer tries to gain entrance
into the graveyard. To Mrs. Owens she says:

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My baby! He is trying to harm my baby!...Protect
my son!

Mrs. Owens knows this
is the baby's mother—and she believes that it is her duty to care
for the boy—because she has given the boy's mother her word. With her husband's
agreement, she talks to the others in the graveyard who debate the issue of "adopting" a
living child until the Lady on the Grey tells them:

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The dead should have
charity.

Silas is the
character who is not quite a ghost, but certainly an other-worldly character. He is able
to move between the graveyard and the world of the living, so it is he who provides Bod
with food, and eventually, clothes. He is Bod's
guardian.

His
guardian could always be counted upon to explain matters clearly and lucidly and as
simply as Bod needed in order to
understand.

Another character
is Miss Lupescu. At first Bod does not like this odd and strict teacher who comes to
replace Silas when he needs to "take a trip." She is a werewolf (actually a Hound of
God), but Bod does not find this out until he finds himself in deep
trouble.

And
now, bounding toward [the ghouls] across the desert floor in the shadow of Ghulheim, a
huge grey beast, like an enormous dog.

The dog spoke, in
Miss Lupescu's voice.

When
Bod is young, he meets a girl about his age named Scarlett who often visits the
graveyard. Soon she moves away, but later comes back into Bod's life. However, she
really has no way to understand this young man who has lived a very different life than
she has.

Finally there is the killer Jack. At the beginning
of the story, it is unclear why he killed Bod's family, but what
becomes obvious before too long is that he refuses to give up. If he can find Bod, Jack
will finish what he started and kill him.

Bod grows up in
the cemetery with Freedom of the Graveyard—the power to see what ghosts see. He moves
throughout the graveyard, visits the ghosts and spirits, learns of other creatures that
also abide there, is taught to read and write, learns to love those who are like his
family, and is protected from Jack.