This is a series where you CROSS-EXAMINE PARROTS AND USE UNDERPANTS AS EVIDENCE. We've even had clowns (literally, it was a murder in the circus) as witnesses. Srs bsns.

Granted, that some characters can get (and sometimes have) interesting character development. I've cried over endings in previous games. They're silly, but they can do serious things well. Apollo Justice was a rushed game where they spent too much time explaining what Phoenix was up to in seven years, so the new main characters didn't get enough screentime to get good development. But to say they have no personalities and we're all hallucinating it...