Originally, Hulk was supposed to be grey. But when the first issue was printed, the printers messed up and in some of the printings Hulk was green. Kirby and Lee liked it, so they made it permanent.
John Zakour and Scott Roberts
Originally, Hulk was supposed to be grey. But when the first issue was printed, the printers messed up and in some of the printings Hulk was green. Kirby and Lee liked it, so they made it permanent.