For the sake of discussion, assume I know little to nothing about Transformers fiction. As the title asks, how do you kill one? Is a Transformer's life ended only by the destruction of its spark, or other bodily systems? Where is the spark located anyway? How it is that some characters are killed by headshots (presumably not where the spark is), and others killed by bodyshots? How do characters like (IDW) Perceptor and Hotrod survive devastating injuries and survive? Where was (IDW) Sunstreaker's spark the whole time he was just a head? Also, how exactly do dead universe denizens regenerate; is it like the titular Golden Army in Hellboy 2? Discuss!