Di getting away at the end instead of being arrested makes me wonder whether she was originally intended to be the final boss of season 2 instead of Trina ?Bob Schooley posted some notes for what I assume is the "City of Monsters" two-parter. From what I can gather, it might've been planned as a three-parter, A LOT more happens in it, and it would've had a VERY different ending.
Yeah, her coming back and reuniting with Hiro...really didn't end up going anywhere, unfortunately .Also, he confirmed that Karmi had an arc in season 3 that was scrapped due to Disney ordering the show to cater more to comedy.