What character do you hate on Harry Potter?

Do you mean Malfoy? Yeah I too hated him, he always spoke in a very slow very boring voice, nearly fell asleep each time he spoke. But I hated Dolores Umbridge the most. I absolutely hated her, she was the worst character ever. If I was in the Harry Potter world she would certainly be one of the very few I will actually make my duty to Avada Kedavra to hell.

I hate Dolores Umbridge and Malfoy

I also hate the character of Malford's dad.

Like everybody else, I hated Umbridge as well! She was so horrifyingly annoying, but I also like how she was PWNED in the end! :D Now that was priceless! Especially in the movie, lol! :D And hmm... at some point I hated Bellatrix for !#$#0'$ Sirius (sorry, I did that just in case someone didn't read Book 5) cause it was so sad! :'(

Well, I really hated Snape, you can praise him all you like or call him a good loyal guy but Just hate teachers who take advantage of younger students. That is purely incorrect as there are many teachers like him in the real life. I also never like any of the villains.

I think Voldemort is going to top my hate list of harry potter. For sure.

the characters that really piss me off are the characters that aren't very good actors. and that goes for all movies. in harry potter, i think the character i hate the most would pobably be fred or george. the one that got killed. i liked him at first but then he had to die.