Yes, I'm a writer. I write things. And thus I answer your questions.
Do you think Video Games have affected your writing/drawing abilities?
Absolutely. Intensely so. For that matter, the first thing I ever committed to writing? A novelization of Crash Bandicoot. I was like 10, Crash was my favorite game, and I decided to write a trilogy telling the story of the first game (with a lot of interpolation, of course). I finished part 1 at over 80 single-spaced, handwritten pages, then moved on to my own original writings.
Was it in a negative or positive manner?
Positive, entirely. Outside of the fact that Crash Bandicoot is really what got me writing, writing video games and writing about video games is what I love to do. I study them, examine them, and I consider video games to be an important and highly impacting artistic medium. I'm even writing the story to an indie video game right now, and I also keep up a blog called <url=http://binarynarrative.blogspot.com>Binary Narrative specifically on the subject of video games as a narrative art (though I haven't updated it in a couple weeks due to unusually intense school and other commitments).
What genre do you most frequently write/draw?
Science fiction and fantasy, mostly. I like the freedom granted by such highly fictionalized settings; I can basically make up whatever I want, within reason of believability. The ability to create an entire fictional universe just has so much more potential than setting it within the real world, and I love that.
What was your most recent inspiration?
A story that I started writing almost three years ago, actually. It more recently became the story for an independent game I'm developing with some friends and a few people I met on this very site. The idea is to create a fantasy RPG that nostalgically harkens back to the Super Nintendo glory days of the JRPG; the main inspirations are Chrono Trigger and Final Fantasy VI. But yeah, that story is developing rather well with the help of the other writers on the team (one of which, Trivun, is on this site and will probably even post on this topic at some point, if he hasn't already ninjad me already with it). Becoming quite a nice, long, complex fantasy story worthy of its video game genre, I think.
Do you have any particular creative quirks (Write character dialogue like you imagine they'd speak, give each character a particular color scheme, etc.)?
My main thing is that I like to name characters based on foreign words (from dead languages, if possible) that describe their character in some way. It's a great way to do subtle foreshadowing in some cases as well. But yeah, I try to do stuff like that when possible.
I also simply have my strengths and weaknesses; I can do pretty much everything, but I'm far better at narrative than I am at character development or, to a lesser extent, world development. I'm capable in all categories, but story is my strength over characters and setting. Needless to say, having a writing team for my game is really helpful.
How often do you create original universes/characters as compared to using someone else's universe/characters?
Most of the time. Fanfiction isn't really my thing; I haven't written any in many years. As I mentioned when talking about genre, I like creating my own world and setting.
What was the plot/prompt of the last story you wrote/drawing you drew?
Were I to summarize the game's story for you without giving any real details, it would sound pretty typical of the genre (though also pretty interesting, I think), but that's kind of the point, for now; again, it's meant to be nostalgic, so it will be presented similarly to those older games (even with awesome synthesized music), start off on familiar ground, and set itself apart in how it progresses. Rest assured, it sets itself apart as it goes on, even reaching that middle-point of many JRPGs where everything changes radically, but explaining exactly how would be giving spoilers for my own creation that hasn't even been officially announced yet, and that simply won't happen. Sorry. Suffice it to say, the initial concept for the story wasn't even touched on in that tiny summary.
EDIT: And in response to the thing about gamers becoming "artistically stunted," I call the highest level of bullshit. Video games are an art form; they tell stories and present them in an artistic manner along with interactivity that can actually increase the power and impact of that artistic value. If video games stunt creativity, so do books, movies, music, and all other art forms. It's a stupid, ignorant argument that will hopefully die out as time goes on and video games become more artistically recognized.