In Let the Right One In (orig.: Låt den rätte komma in), after Oskar found out about Eli's true nature and let her into his apartment he asks her: Oskar: Who are you? Eli: I'm like you. ...
Since the beginning of Let the Right One In (orig.: Låt den rätte komma in), Eli was accompanied by Håkan, an older man, who tried (not very successfully, though) to kill people and gather their blood ...