Well i dont have a long list, but...
1) Fatty - His hairstyle, well just his overall style is annoying.
2) Algie - Although funny at times, his unzipped pants are soooo frikin annoying!!
3)The dude that walks in the boys dorm and says "I can sleep with my eyes open"
4) Eunice - Do i have to say it?
5) The punishment prefect - He chases me for literally everyithing. lol. I do like to stuff him in garbage cans.
and thats it for now.
BTW: you can grapple anyone, just make sure u press L1 to get locked in (not R1) and just press Triangle. Sometimes they still can get out, thats when u do the [Punch, Punch, Kick in nuts] combo. When they are bending over, theres a perfect chance.