Without reading the other posts or even the list of choices-- my first thought was...BOBBY TWIST. Then, of course I realized you were referring to the actual characters, not the actors who portrayed them! With that in mind, I'll have to go along with the senior Mr. Del Mar, for planting those hideous homophobic ideas in the minds of sweet little Ennis and K.E.
Dishonorable mention goes to:
- 4th of July biker creeps
- rude old men in Lureen's office (making disparaging remarks about Jack!)
- Cassie sticking her stinky feet on Ennis and calling him 'dummy' just grates on my nerves. I guess it bothered me more than it did him.

- Oh, what the heck, dang it---BOBBY F-ing TWIST! 'Next two weeks'?!? That's right, little 'Weird Child from Anywhere but Texas'.... Why, I oughta......