Sebastian is a mysterious entrepreneur who has stepped in to help Matt and Sophie deal with the legal and financial issues they've been facing. A secretive benefactor, his motives seem mostly altruistic... but whose side is he really on?
Episode 201: "Everybody Loves..."
Sebastian is highly secretive but appears to put a lot of weight on the audience's input and decisions in the lives of Sophie and Matt. He rarely reveals his own thoughts, but prefers to defer to what the viewers think about any given situation, which can be frustrating for both Sophie and Matt.
Artificial Season 2
Episode 2: "Robotic Sibling Rivalry"
Episode 3: "How to Artificially Treat People"
Episode 4: "204 Error: Friendship Not Found"
Episode 5: "Toxic"
Episode 6: "The Fate of Humanity"
Episode 7: "Grief in the Age of Robots"
Episode 8: "Sophie's Choice"