FIREFLY has been COBRA COMMANDER's primary source of demolitions and destruction since the group's inception. He performs jobs flawlessly and with untraceable precision almost every time–the few exceptions being when the G. I. JOE Team has been able to foil his plans. He still remains on the loose, his true identity a secret, ready to take on his next job. Those assignments have become somewhat rarer, however, and FIREFLY suspects some person or organization is trying to steal his business. Unfortunately for them, FIREFLY is more than capable of infiltrating the COBRA hierarchy itself to discover who this is... and eliminate the competition!
The only drawback to using FIREFLY is also the source of his code name: he takes far too much pleasure in causing his targets to burn, sometimes uncontrollably. He does display an impressive knowledge of incendiary and pyrotechnic materials such as magnesium, napalm, and white phosphorous, but over the years he may have come to enjoy his work a little too much!
From COBRA COMMANDER's Files: "It is financially unfortunate that I still need to pay FIREFLY for his services, but there are times when I need discretion; someone who won't yell 'COBRA!' every time something blows up!"