"Star Trek" episodes often tell a moral story. philosophical and moral questions are common. In the "Star Trek: Voyager" episode "Tuvix", a transporter accident puts two characters, Tuvok and Neelix, into one body. This makes a new person, Tuvix, who has his own personality. The crew of the Voyager must decide what to do: they can kill Tuvix by separating him back into Tuvok and Neelix, or they can kill Tuvok and Neelix by letting Tuvix live. In the end, Captain Janeway decides to save Tuvok and Neelix, although the Doctor thinks this is wrong.