Silas

1. fights against the Jacks of All Trades with Miss Lupescu (werewolf) and the others

2. a vampire?

2.1. because he sleeps at day and lives at night, he sleeps in the coffin, he's neither alive nor dead, has pale skin and has lived long time already

3. Bod's guardian and teacher

3.1. brings him food, clothes and gives advices

4. has the Freedom of the Graveyard

4.1. can come and leave whenever he wants

5. quiet, smart, gloomy and protective towards Bod