I wanted to ask if I can ask about mythological creatures. For example, I wanted to ask about a succubus (What are its physiological details, types, etc.).
Now that this is on Meta, I feel ok answering it.
We've got a whole bunch of "anatomically correct..." questions, along with several questions that branch off into related topics once that question gets answered. Not to mention a mythical-creatures tag.
Anatomically Correct Pegasus (asked just the other day)
Would swimming dragons need wings? (about a week old)
Take a look-see to see what's already been asked and if you have a new question, just make sure it falls within what's considered "on topic" and avoid being too broad. Old questions will help.
We help people to build consistent, fictional worlds for novels, games, etc. A question like "what is a succubus" would be off topic, a question like "here is the succubus for my setting, are there unintended side effects from the game mechanics" would be on topic.