I agree 100% Endora was absolutely right in this case.
Ray’s own parents never won any parents-of-the-year awards.
But the worst parents on that show were the couple who visited with their “special” obnoxious kid. That’s one of the only two episodes I cannot watch. (The other is the one about the school custodian.)
My first thought as well. It really doesn’t get any worse than these two.
AFAICR Tony never outright smacked him,. but do remember several cuffs to the back of the head for one indiscretion or another.
The obvious answer is Peter and Lois Griffin of Family Guy.
But of the less fantastically bad couples, how about Ross and Rachel from Friends? At first, Ross has a son that he doesn’t seem to do to bad with, until he has a baby with Rachel. Suddenly, his son seems to vanish. Then the baby hardly seems to be around after she’s born. And when Rachel almost moves to Paris, all Ross seems worried about is not seeing Rachel anymore. He doesn’t seem the slightest bit worried about her taking their daughter with her.
Malcolm’s parents on Malcolm in the Middle
All of the Bluths are horrible parents (even Michael).
Not only that but Dr Quest had a beard in an era when very few men did.
For worst parents, I nominate the two druggie women in “Absolutely Fabulous”.
You have Marshall & Ted confused. And I’m thinking that Future!Ted skips over a lot of stuff. My evidence is that his wife hasn’t killed him yet.
Are you kidding? He’s the Best Dad EVER! 
I specifically remember an episode of Jonny Quest where they’re on a quest for the “Lupe Garrou” a Canadian werewolf. They fly up to the far north country and set up camp in the deep woods then Benton said, “Jonny, you are Hadji stay here at camp while Race and I fly into town and see what we can learn about the local Lupe Garrou.”
yeah … that went well …
I’m going to have to cast my vote for Betty Draper.
Don’s no superdad but he seems to like his kids when it occurs to him to recall they exist. Betty, though she has a maid to do all the heavy lifting, seems to actively hate them.
Excluding absurdities like South Park, I’m going to go with Gabrielle Solis from Desperate Housewives.
Oh, shit, how could I forget?
Dana Scully, from The X-Files. William, the “miracle child” who might be an alien-human hybrid, or a “super soldier”, or something like that, is wanted by both Evil Government Agents and Evil ExtraTerrestials, is abandoned by his mother, given to some poor unsuspecting farm family who has no freakin’ idea as to what they’re getting: a telekinetic baby being hunted by an intragalactic team of soldiers who will stop at nothing.
Scully, of course, defends abandoning her child in this manner as the “best way” to protect him. Of course, because the best way to protect a person being hunted by governments world- (and galaxy-) wide is to foist them on unprepared rubes.
Livia Soprano
Frasier Crane was a pretty bad dad. He was a totally absentee parent save for about once a year when the kid would come visit, and content to let his son live with a woman he knew to be an ice queen. Both Frasier and Lilith acknowledged using their son as a research subject (having him navigate a maze when he was a baby among other things).
Probably the winner. She’s the only TV mom I can think of who ever actually tried to have her child killed.
But what about Livia Drusilla? I heard a snake bit her and died.
She did try to have one of her sons killed, but he died of his own causes before then. And she got her stepdaughter banished to an island for nymphomania.
John Winchester from Supernatural.
Since no one’s mentioned it yet-all the parents on Rugrats. They regularly dump a group of toddlers in a fenced in area and leave the room. No one ever peeks in on the kids or wonders about loud noises (or the total lack of noise when the babies up and leave the house).
Carla from Cheers. Cliff’s mom from the same show also did a lousy job when you consider the result.
Whaaat? I thought they were awesome.