Eclipse, arise!

taking place in a time with people, events, and places durring the times of world war 2, the Axis powers has nearly brougt the entire world to its knees. Using their now superior and greater humanoid machines, called mecha, they managed to overpower the Allies' mecha to the point where even their cannon fodder was too powerful for them.
About to face their defeat, a new mecha raises up from the semmingly out of nowhere, except this mecha is not any ordinary mecha, its a SUPER ROBOT!! and this super robot alone can turn the tide of war. but who is the pilot of this walking fortress that swims throught the skies and flies beneath the sea!