Creepy killer robots can add a new name to the horror genre rolls — In writer-director Alex Garland’s 2014 science fiction-horror film, Ex Machina, a tech-bro billionaire entrepreneur/inventor, Nathan Bateman (Oscar Isaac), with delusions of grandeur, attempts to create the “perfect woman,” a self-aware, sentient simulacrum in a robotic body. As always with this particular thematically-driven sub-genre (e.g., “tampering with God’s work or biological/evolutionary…