As per the site rules, questions relating to Jewish individuals, when not exclusively related to Judaism, are off-topic.
I would assume this would extend to even discussing personalities in the Tanach or Talmud.
Would questions about biographical information for a particular personality in the Tanach or Talmud be on-topic for the site? Or would they be closed like any other question relating to Jewish individuals? (Such as a question about a modern rosh yeshiva, rabbi, etc.)
Like, for example, if I wanted to know why R' Acha is called "Aricha" (which means "the tall one"), could I ask why he was called this?