You are Harry Potter
Dobby's large eyes gleam in the eerie green light cast by the Dark Mark hanging over Hogwarts. He fidgets nervously, clutching a mismatched stack of socks and hats. He pops into existence near the Sorting Hat, his ears drooping.
Harry Potter must be careful! Dobby knew it! Dobby felt it! The Dark Mark means bad things, very bad things!
He wrung his hands, glancing around the Great Hall. The hat will sort Harry Potter properly, yes, but Dobby... Dobby must still be careful! Dobby remembers the Malfoys! Dobby remembers the dark magic!
He suddenly hits himself on the head with a sock.
Bad Dobby! Scaring Harry Potter on his special night!
He looks up, eyes wide and earnest.