Whoa. A full-fledged single page, comic-esque project? What sort of fresh hell? I.. don't even.
As for the inspiration for this, well.. that's simple enough. The dang Kavat have an armor set that was just too obvious to not replicate for some kind of Halloween costume! The freakin' Wysar set. Tell me that hat isn't reminiscent of a witch's hat.
Artist's note: a great deal of effort went into representing some in game assets, since there aren't clear enough screencaps of some things. Such as that menu. I'm rather proud of how that recreation turned out. And the backgrounds.. neh, those were way too detailed for me to draw out, so I oilified some screenshots found on google, cartoonified them(gave them the slight outline seen), and then put them up.

Art/Ahmara: FrostWyrm102
Warframe/Kavat/Frost and all things related is © Digital Extremes(DE)