After much descussion in the previous post put up by
miera_c, a decision on the matter of introducing new characters has been reached.
Because of the many contributions to this AU, we've developed a pretty solid timeline of stories, the various arcs like the Fever Series for example. In the process, we've also shown just who is involved in the different events and who is living in or around the town of Atlantis. As such, if someone writes a story set early on in the timeline now that introduces a new canon character (i.e. Harry Maybourne, General Bauer, Darryl Morgan le Fey's dragon, you get the picture) that has him remaining in Atlantis, it will thrust all of the other stories set after that story askew.
The point that rambling paragraph above is this: At this point, we're not going to introduce any more major characters in stories that are set early on in the timeline. If you're writing a story that takes place late in the timeline (i.e. after The Siege which is the story furthest along in the timeline at this point), that's fine, but no earlier than that.
ETA: If you plan to use a minor OC character (i.e. Widow Jones who comes in to Elizabeth's store to buy some candy for her grandson), that is fine as well.
Bottom Line: No canon characters can be placed into Atlantis on a permanent basis in stories set before The Siege.
If anyone has any further questions, please feel free to ask. The timeline is located
here, and can also be located at the top of the front page of the community.
Also, another reminder: this AU is a historical one, and as such, things are different then than they are now (obviously). So I just would like to remind everyone to do a little research when adding certain details to their stories. If you're naming a book or something of that sort in your story, for example, please double-check its publishing date. If it was published in 1901 or something to that effect, then it can't possibly have shown up in Atlantis, late 19th century. So to help make your story the best it can be, please check for historical accuracy as best as possible.