Thread:GrnMarvl14/@comment-2054358-20120331000020/@comment-4651179-20120331031437

Generally, Hulk's emblem is cosidered a radiation logo, used many times by licenced Marvel magazines. Iron Man's is the arc reactor. Thor's emblem is Odin's triquetra (used as the symbol of Mjolnir's spell in Thor or the promotional image for Fear Itself)