Dear Miss Snark,
I am a writer who hopes to be published in the future- though I won't start submitting until I've edited my manuscripts several times and maybe had one professionally critiqued.
I have completed three novels (one sucked, and isn't going anywhere but under my bed), edited one, and am working on a fourth because I've heard from several people that it's easier to be harsh on work if you let it sit for a few months.
My question is this: If you write in one genre, but drastically different styles, how likely is it that you'll need multiple agents?
All I write seems to fall under the sci-fi/fantasy section. However, one of my novels is written in a style that's very comical, and even in dire situations the characters make it seem funny. The edited one is written so, even though everything is very dark and serious, a glimmer of hope shines through and leads optimistically to the end. The one I'm working on now seems more suspenseful, with creakings from nearby and a dreadful, lingering fear of being caught.
Since I doubt one agent would ever accept all three, if I do need multiple agents how will I go about it?
What if you get hit by a bus tomorrow?
When it's time to look for an agent, query agents based on one book. Then, if you have a book that's a lot different, we'll deal with it then. You're three YEARS away from this being anything remotely resembling a problem.
Most agents who handle a genre handle all kinds of books in the genre.
Fret less. Write more.