In the Captain Marvel post, you mentioned Firestorms plural while talking about Binary; who all is Firestorm in the BronzeRealms? The comics have Ronnie Raymond and Jason Rusch, both of whom fused with Martin Stein to my knowledge, and the Arrowverse introduced Jefferson Jackson, who *also* fused with Martin Stein. Has Martin Stein just moved from host to host as time has gone on? Who fuses with Carol Danvers to create Binary?
That earlier post can be found here.
The Firestorm Matrix is a physics formula that was developed by Martin Stein to explain the phenomenon after he and Ronnie Raymond were accidentally fused together into the first Firestorm.
Once separated, they realized that both of them had been permanently altered from the original event and would become destabilized and explode if they spent too long isolated without being able to form Firestorm. After confirming that fusing with other people wouldn't similarly destabilize them, Stein partnered with Jefferson Jackson and joined the Legends of Tomorrow, and Ronnie partnered with Jason Rusch as the new main Firestorm.
At some point, Lorraine Reilly is put through similar experiments transforming her into Firehawk so that she can fight against Firestorm. Some time later, she reforms from villainy and falls in love with Ronnie Raymond. At first, her powers seem self-sufficient, but slowly she begins to destabilize like the others, just on a much longer and more forgiving timescale. She and Ronnie fuse a few times just to reset her clock, when she can't find someone else.
When there's a falling out between Ronnie and Rusch, Ronnie re-partners with Lorraine full time as Firehawk, and Rusch deliberately subjects himself to the Firestorm Matrix so that he can continue on his own as another Firestorm, despite not having a consistent partner at the ready.
This leads to years of Rusch rapidly cycling between hundreds of different partners as needed, some of them strangers who almost seize control over Firestorm from the inside for their own ends, and some of them strangers who Rusch stays fused with for too long and partially burns out, leading to scars, exhaustion, radiation burns, and general frailty that can last weeks after he leaves them. But eventually he settles down enough to make some friends who become recurring partners for him, and they help him mellow down a little, while he also cares too much about them to overdo it and risk hurting them.
So, to summarize the current status quo, there are four "destabilized" people who can (and periodically must) initiate a Firestorm Matrix, Ronnie Raymond, Martin Stein, Lorraine Reilly, and Jason Rusch. There are three currently active heroes who use the Firestorm Matrix, Firestorm (Rusch, partnered with various trusted friends), Firestorm (Stein, partnered with Jax as part of the Legends of Tomorrow), and Firehawk (Lorraine, partnered with Ronnie).
Binary has been most often formed between Carol Danvers and Ronnie Raymond, since Lorraine's powers can uniquely continue functioning for a short time without hurting her after separating, which means Firehawk can arrive at the scene, and both Firehawk and Binary continue to fight together for an hour or two before Lorraine needs to either stop using her powers or take Ronnie back. But Carol has also formed Binary on individual occasions with Lorraine and Rusch.
