I watched a few episodes (think 2 or 3) so many years ago that I can not remember anything from it. So, Luna is not inspired from that. Tho, I really need to watch it fully now. Especially to get some fight scene inspiration. Watched some gun scene clips, and I'm like - I want that!
Who is Luna inspired of? There was nothing that I took as inspiration for Luna directly. I just write without thinking about much beside feelings and how it connects to the story. Like, I planned her backstory and that dictated her personality based on that. Someone who has a barrier and 'broken' personality. But a character who do not want to admit that she is 'broken' and want to appear strong. I then just write and form and mold the dialogue based on that. I mean, as weird as it sounds, I don't even know how any character's personality truly be before I start writing dialogue for them. I need the flow.
With that said, she is of course inspired by something, but on a subconscious level (indirectly). Maybe an anime or a tv show I've watched throughout my life that led me to write Luna. Probably anime and a combination of characters. Hell, maybe the 2-3 episode was enough to give me some inspiration several years later without me really knowing. So, can't say for 100% certain that there isn't a bit of that in it. Just doubt it.
The comedy is another example of how it was never meant to be as much as it is. But I've learned it just my writing style, and then I went for it. Thinking about it, it's probably shounen style of anime. I like One Piece, so the deadpan comedy could definitely be inspired from that. Some characters too. Just don't know who, heh.