Within the narrative of the fictional Transformers universe, a spark, also called an AllSpark, is usually the 'soul' of a Transformer. The term 'AllSpark' was created by writer Robert N. Skir, who responded to a fan question about the TV series Beast Machines July 21, 1999 web page. Skir explained that the Beast Machines entity called The Oracle was actually the AllSpark, consisting of 'the spark of every transformer who has ever lived, or ever will live'. In a November 6, 1999 web page, Skir clarified that the Matrix was something called the AllSpark and was 'made up of every Spark that ever was, and every Spark that ever will be'.
In the Beast Machines television series, the term 'AllSpark' was used for the Transformers' afterlife. Although the concept of the Transformers afterlife was briefly touched upon in the original series and Beast Wars series, it was not until Beast Machines that the concept was explored further. The Autobot Matrix of Leadership, as seen in the original series, was not merely a receptacle for the consciousness of deceased Autobot leaders; it was a gateway that led to the AllSpark, from which all current and future Transformers' sparks came. Possessing a sentience, the AllSpark had sent Sparks out into the world to live. When any Transformers, good or evil, were destroyed, their Spark would return to the AllSpark and share with it all that it had experienced, thereby adding to the timeless fountain of knowledge and wisdom. The facility on Cybertron, which produces Maximal protoforms, was named after the aforementioned Matrix, and was analogous to human's Heaven. A similar Predacon facility also exists, named the Pit, and was analogous to Hell. The Pit was also known as the Inferno until the late-season addition of the character Inferno.
In the Transformers 2007 live action film, the 'AllSpark' is a cube-shaped artifact adorned with glyphs and designs which is capable of granting independent life to normal electronic and mechanical objects and is the source of life for all Transformers. The AllSpark was prominently featured in the concurrently released 2007 Transformers Animated series, where it shares a similar history and capabilities with its 2007 film counterpart, but resembles the Autobot Matrix of Leadership.