Firestorm Matrix

The Firestorm Matrix refers to the genetic makeup of the meta-human Firestorm. When they merge, Ronnie Raymond and Martin Stein are quantum spliced together and their atoms transmuted in to one body. During this process, Ronnie's body is chosen. It was theorized by Harrison Wells that this is relative to Darwinism, that nature will pick the strongest parts of something, Ronnie's body being the most youthful and strong of the two.

Due to the nuclear nature of the transmutation of the two bodies, Firestorm is able to produce fire from parts of his body, as well as propel himself with the flames in to the sky.

The Firestorm Matrix is possible to create with unwilling participants, but parts are normally mixed up and causes a confused Firestorm, overloading the Matrix and causing the body to go nuclear, ultimately resulting in an explosion.

Overview
The Firestorm Matrix gives the participants, when separated a connection to one another, both mental and physical. When separated their bodies push them to join. When merged unwillingly, the result being an unstable merge, which over the course of several months, the two combinees begin to reject each other, resulting in a massive nuclear explosion. When merged willingly, the merge results in a stable form of the two fusions.

Known users

 * Firestorm
 * Ronnie Raymond
 * Martin Stein

Behind the scenes

 * In the DC comics, the Firestorm Matrix is relatively similar, but has a few key differences. The main part of the Matrix is during the merging of two people, during which they explode in a Firestorm-like fashion. This is actually seen on The Flash, but only when Firestorm separates its unwilling participants. Once the two separate, they retain the information of their time as Firestorm, but it's locked away until the next time they re-merge.