More and more will be reveal once Neo Japan has gone into a more stable state and have lots of visuals to support the story
Edit: I heard war frame a little but I never seen the Excalibur character, when I google the character I was quite surprised that mine really look like him. :/ I just lasso-ed stuffs and come up with shapes and the horn was a last minute thing. Oh well.
I KNEW I WASNT THE ONLY ONE TO NOTICE THE WARFRAME RESEMBLANCE