I've never been a big PC gamer myself, but I would definitely like to see more Halo games on PC! People always come out with super cool mods and whatnot!
Without a doubt the Forerunners.
They have serious home field advantage and knowledge that surpasses the knowledge of the UNSC by ten fold. The Convenant are a threat, but nothing compared to Promethians.
http://fc09.deviantart.net/fs70/f/2013/237/e/2/lil_dog_forum_sig_by_bronyswag-d6jpyjo.png
I tried to make the background look like it's sticking out but I'm not too sure how to do that
If you want anything added or changed let me know
Could you possibly find some pictures on what you want? I can't find any pictures that meet the specs.
Gryffin will have to do this one, he has the file for your sig and has the filters used for it.