Who is the worst fictional parent of all time?

Discuss.

Yes, all that because I love you.

Worst father but one of the best villians of all time .... Darth Vader

He was never there when Luke was growing up, cut off his hand, tries to turn him to the dark side and that not even counting trying to kill all his friends.

Rusty Venture.

Leland Palmer
Noah Cross

Rusty Venture. He never shows any affection toward his sons, never lets them show any affection toward him, takes them on dangerous "adventures" against their will, doesn't listen to them, has left them ill-prepared for life outside the compound, pushes them into lives they don't want, and was generally unconcerned about their safety and welfare for most of their lives.

Although, arguably, Rusty's dad Jonas Venture was the worse father, seeing how he's the root of all of Rusty's psychoses and was responsible for turning Rusty into the craptastic dad he is.

Padme Amidala.

Oh boo hoo, my rage filled loverboy is actually truly evil. I just cannot live and shall orphan my children because I lost the will to live.

Lestat

Tem Rei, Amuro's dad from the original Gundam.

Gendo Ikari - Not only completely distant and borderline abusive, he did not even manage to turn his son who he believed to be the only hope of humanity into a damned Spartan.

Oberon (Amber) - encouraged his children to plot against and kill one another.

Edward Murdstone, David Copperfield by Charles Dickens

Jack Torrence, The Shining by Stephen King.

Dr. Impossible. The guy locked his family in his corporate headquarters and expected them to get emotional fulfillment from a robot programmed to simulate real human emotion. And he couldn't even be bothered to learn his own kid's name.

Gant Hoxey. Yes, I did watch that movie, I imagine few others here have.

The main character from Oldboy.

The dad from Alf. Think about it.

Dora the Explorer's parents.
"You're what, maybe 12 years old? Going out into the deepest, darkest jungle alone? Sure! Go right ahead. Just take a backpack full of junk and a talking monkey. You'll be fine."

I've got one. Spoilers for the books I'm talking about in the next paragraphs.

Darken Rahl from Terry Goodkind's Sword of Truth series. Classic but not classy bad guy. He's made pacts with the lord of the underworld, convinces children to fall in love with him, kills them by feeding them hot molten lead, and then uses their tortured souls to traverse the afterlife. That is just some of what he does to other people. Richard, his son (unbeknowst to either since Richard is a **** child), is captured during his quest to stop him, tortured to the brink of death several times, and finally has a spell cast on him that makes his friends only see him as their enemy. It is much more detailed than that and that is just the first book. The next book Darken Rahl comes back from the grave, places a curse on Richard which will drag him into the hellish, darkest regions of the underworld, basically right next to the Keeper of the Dead, and continues trying to destroy the world.

the McCallister family

The Lohans.

Stephen Stotch (Butters' dad) from South Park

Also wanna throw out the Scarlet Empress from The Exalted line of RPGs. The lady has her huge (and I mean huge) family at each other throats to further aims and is not above causally tossing them aside or (literally) sacrificing them (to the old gods) to power her empire.