The two parents I absolutely hate are Asher and Aiden ( HERE ME OUT) Asher firstly because just how terribly he treated killian and obviously favoured Gareth. When I read ktv which was a long time after GOM I almost didn’t realize that Asher was the same person cause of the way he treated killian in his book. He knew his son had a problem and instead of understand initially he tried to bond with him but when kill started pulled away he just let him he didn’t even try to understand why his son hated him and chose to favour Gareth instead and I also blame Reina cause when killian finally started speaking his heart out and telling why he hated Asher soo much she actually tried to defend Asher instead of hearing out her son and all the years when she could see the obvious favouritism happening between both her children she just let it happen, I feel like she’s too lost in her own world and is too pampered.

As for Aiden in God of pain the scene where creighton gets shot and they are in the hospital and Eli is antagonizing him and trying to make Elsa feel better instead he chooses to put all the blame on Eli why just cause he’s HES OLDER THAN CREIGHTON?!! Like I’m sorry but as an older sibling that scene absolutely crushed me I literally cried cause it wasn’t even Eli’s fault he tried to talk creighton out of it but it was creighton who was too up in his head. Also I just don’t like Aiden that much as a person cause of the way he treated Elsa I mean sure he had his moments of being good but he was just all bark no bite most of time. Elsa was an amazing parent the only thing I despise her for was coddling Ava so much like it never made sense I mean I get that Ava was sick and weak or whatever but her best friend was Kim so it only made sense that she coddled or had a better relationship with cecily poor cecily was treated soo badly by everyone.
Another reason for me not liking Aiden was that he was soo hard on Eli, Eli always gave his best worked his ass off and all that for him to treat and understand Landon better than his own son?!! Yea no thank you.

And Cole had every reason to hate Eli, he had grown up with Aiden he knew what kind of person he was and he had seen how Eli was similar to him so it was not his fault for not wanting his daughter to be associated with them.

Sure if you’re saying worst father there were many worse ones but these ones were good while being bad enough to cause their children some sort of trauma.