At the IAmAFiction subreddit, you can actually take your fictional character out into the world–interacting with readers and answering questions in character to help your writing process.
The group was inspired by real-life interviews on Reddit, giving creators a forum to test their characters. Simply join the group and submit your character as an interview subject. Here’s more about the site:
If you are working on developing an invented character for creative writing, roleplay, or pure novelty, this is the place to expose your character to the world and subject them to questioning to help you flesh them out. IAmA posts work just like a regular IAmA post, except the poster assumes the role of his/her character. Please be a good IAmAfic citizen and comment on other people’s submissions as well as your own. Remember, they’re not real people — so no need to be shy!