Recently on Facebook, artist CrissCross posted several of his concept drawings for Firestorm. These were done back in 2003 as they worked to develop the look Jason Rusch would eventually debut in Firestorm vol. III (May 2004). You'll find six versions below that are breathtaking and wildly different from the final design. According to CrissCross, "I had a particular vision for a Quantum Man, not a Nuclear one."