Maxwell's Demons #1

Max and his father live alone. To pass time, the boy invents animatronic, talking playmates and a portal. Corvus arrives one day to take Max for guidance and training. Months of training pass and they are pursued by The Leviathan. When Corvus sets Max to battle The Leviathan to the death, Max quickly builds a weapon out of parts from his playmates and stuns The Leviathan. Thinking it dead, Corvus reveals his betrayal. Max makes The Leviathan kill Corvus, as the beast can be commanded as a manifestation of his subconscious. Max builds a portal home and builds a new playmate, Leibniz.