This is so cool! I love it! I love the saturated colors and the contrast between blue and purple

Actually, it is a Full Metal Alchemist reference.

But you are right, it totally skipped over my head that it could be a Hellsing reference as well!

its a Hellsing reference? 

Thank you Hapiel for the kind words and for your feedback! I agree, more saturated colors would match the context a lot better :)

Nice concept! Could use more saturated colors, if you ask me ;)