Kreacher was the House-elf serving Sirius Black's family, even though Sirius disliked the elf and didn't want him around. Kreacher eventually played a big role in the last Harry Potter movie ...

Dobby the House Elf first appeared in Harry Potter and The Chamber of Secrets ... The reason is that there are large grey seals in the area and they don't want them to choke on socks left behind ...

Honestly, Harry was saved more times by Dobby than you can imagine. So check out his powers and learn why the fearless elf ...