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?
A great pick though at a Minor awful character: Sarah Lynn’s Father. I don’t know if it’s been mentioned by someone else here today yet but >!it’s Heavily suggested/implied he molests her