Good Job, Zero!
That's an impressive accomplishment already. Imagine how much work it would be to make an entire comic book (or "graphic novel").
I do understand the story, but it's a little awkward in some respects. I get the feeling that you were thinking mostly about the paintings rather than how the story was meant to play out. Normally it's best if you either write down your story first, then do some very simple sketches, like a storyboard (placing key elements, layout and text placement) and then check how the story flows with the pictures. Once you are happy with it and it all has the right kind of pacing and connects well, then you start painting the actual images.
My other recommendation would be to pick either German or English, but don't mix it up, especially when the names have a meaning. If it would feel funny to you in German, you can be sure that it feels funny in English as well, so that's a good way to check, if everything feels right to you or not. There's nothing wrong with German by itself. In fact, it is a beautiful language. The one big trouble would only be, if it tries to be something that it isn't. That's when it might get a bit silly.
I even think it's kinda cool, if you stay confident and convicted, even if it feels a bit funny at first, but at the end it really can get very cool. "Mr.Moonface", for example, could simply be "Mondgesicht". That's a very spooky name, when you think about it. It doesn't need "Mr." or anything like that.
Also, always watch out that the grammar is correct. There's nothing more awkward than funky grammar in a comic unless it is absolutely deliberate and one can tell.
But before I continue, let me know, if you even want to get some detailed feedback from me, hehe, because I'm not entirely sure how you might take everything I might tell you, hmmm.
Again, though, really some impressive work you've put together there and as a whole it also shows how much you're growing as an artist in the process!