His owner. Malcolm doesn't want to say that because he can tell that Jinn is avoiding that word, and for obvious reasons. "When were you freed?" he asks. "Was it only because you came here?"
Malcolm has had to trust too. He's had to trust that he isn't imagining this whole place, that his mind isn't fractured, and that the people here are who or what they say they are. "I haven't met any who have been forthright yet," he replies. "Truthfully, I'm not looking for them, though they have a tendency to find me anyway."