Dobby

Dobby is a minor character in the Harry Potter series. He is a house-elf from the Malfoy family who befriends Harry and goes out of his way to try to save his life numerous times. In the final book, he is killed by Bellatrix Lestrange while helping Harry and his friends escape from Malfoy manor. He was avenged by Molly Weasley when Bellatrix Lestrange is killed.