I think we can all agree that Bojack, as the main character, beats many if not all the main cast when we talk about being morally corrupted. Still, who have you considered a " worse person " — the definition of bad person isn’t really precise I know, but consider it as " person who does actions generally considered deplorable by the public. " — than Bojack while you were watching the show?
This question is tricky with bojack for a few reasons-
My pick is Hank Hippopotamus.
How is he cartoonishly evil? As a modern American man, he is woefully unprepared to manage a woman’s emotions. He was never taught, and he will not learn. /s