I love the show. I'm still watching season 3. I just haven't had much time to sit down and watch it. As for favorite characters is a tie between Roman and Peter.
I realized... I love that song. Still, I stick to S. O. S. I have un unhealthy obsession with Roman Godfrey and upires, and supernatural creatures in general. I guess it makes me kinda weird. Since you're writing a fanfic abou him, I take it you've watched the show? Mind if I ask you who is your favourite character?
Agree, I'd add Izzy too. She was better than in the movie, but still not as good as the books... They changed everyones character. And I dislike Jace and Valentine in the show. Especially Valentine... dear lord he's horrid. No offense to the actor but the books Valentine is amazing and tv show Valentine is just... ugh
Watching the show is like watching a car wreck. But I still watch it. mainly because they actually casted people that I thought matched the character perfectly. Magnus, Alec, Simon and Raphael are perfect in my eyes.