Board Thread:General Discussion/@comment-108.38.193.5-20140417061758/@comment-24831427-20140418051420

I find it difficult to beleive everyone would have a unique semblance. I imagine that some of these would be rare or unique, but it's also very likely that there would be some overlap. In A Certain Magical Index, for example, the most overpowered characters have unique abilities that make them stand out and be a cut above the rest, but some powers such as teleportation and invisibility are shared among multiple people, with variations here and there.

I can understand how each introduced character that we see may have different powers, but if you think about this beyond the scope of all the characters we'll ever get to know, they'll at least be significant overlaps in the population at large (It's hard to beleive there would be millions, if not billions of unique powers).