He was desperate to stop Harry from going to Hogwarts that year because Dobby knew the plan to reopen the Chamber of Secrets. He knew this because he was the Malfoy family House-elf, and it was ...

When it comes to the magical world of Harry Potter, the Hogwarts houses play a pivotal role in defining a wizard’s ...

the house-elf, who warns Harry against returning to Hogwarts, for terrible things are going to happen. Harry decides to ignore Dobby's warning and continues with his pre-arranged schedule.

Kreacher, a house-elf, is essentially Harry's personal slave ... Salazar Slytherin tried to rid Hogwarts of "non-pure-blood" wizards in 990. When Harry arrived at Hogwarts 1,000 years later ...