Currently on my small GIJoe team of 28 active 'Joes, there are essentially THREE machine gunners.
I've got Rock & Roll, who as the original 13's machine gunner is not only capable with most light and heavy machine guns, but has upgraded from his original M60 to a "5.56mm, six-barreled, electronically driven, mini-gatling machine gun!"
And of course, a figure that by itself I can call a favorite, despite being not from the original RAH run, Roadblock. The heavy machine gunner with a .50 caliber browning.
Do you have a favorite machine gunner? Does Crossfire beat them all, or is there someone else that is better that I don't know about it? Is "Doubleblast" in existence in your Joe verse?