Board Thread:Questions and Answers/@comment-11255996-20130702125423/@comment-3361105-20130702171201

The list is based on the most-visited pages on the wiki over a certain period (I think it's probably a month).

Given that we get about 8 million views on the wiki every month, I'd say that the most visited pages on the wiki are a decent representation of the most popular characters in general - at the moment.