I know about Berkland. He predicted the World Series quake. I think he had some other empirical data about the water level changing and the presence of gasses in wells changing before quakes? I don't have a problem with that stuff as long as it's genuine observation and recording of data. That is science.
He is a scientist, but not following the customary academic science path to professional success. That makes him an outsider, and not having to worry about keeping his job by defending his crackpot theories anymore makes him a rogue scientist. He might be right about some things, though.