How to use ANTAGONIST in a sentence

Antagonist (n); One that contends with or opposes another

CAN YOU TOP THAT? Real life examples of how to use the vocabulary word ANTAGONIST in a sentence. Antagonist (noun); one that contends with or opposes another. www.vocabslam.com

Examples from video:
1.) My twin sister is especially antogonistic towards me, everything I say she disagrees with me.
2.) My swim coach is an antagonist because he always pushes me to go harder and harder.
3.) My mother is very antagonizing towards my dating needs, she;s always trying to hook me up with these weird girls I'm not interested in at all.
4.) Some people see Mohamed Morsi as an antagonist in the dispute over the Egyptian Constitution, but, other people see him as the hero.
5.) The biggest antagonist in my life right now is my roommates rabbit who lives in our apartment, runs away form everything, [poos] everywhere, and chews a whole in my computer charger.
6.) My landlord is my antagonist because she won;t allow me to have a dog which is my one true yearning in life (whimpers).