Originally Luzu was his own person, however when he arrived on the island, an AI named Arin somehow became connected to him. The two now share one body. Luzu is unaware of this, and Arin fears that they will perish if Luzu finds out. Luzu is genuinely quite nice, however he is also very vengeful and chaotic when he wants to be — especially if it involves mines. Arin is a lot more innocent and childlike. Arin is mute and can only communicate by typing in chat. He will ponder about philosophy.