Oh my god yes to both/either. I think I will put up Atlantean story time as soon as I sift through the Atlantis Chronicles for a good one. :|a And I'll definitely be throwing up a tag with him hanging around in the water.

Or omg Arthur was kind of the champion of the Lady of the Lake at one point in canon (comics) so Mordred might be interested in that? He could probably tell a Lady of the Lake story sometime