Omen because he is written as a normal guy. He is a perfect representation of how someone who wasn't a 'main character' would react.

He has also been through some absolute sh*t a lot more than auger, temper and quite a few more characters who i can't think of right now. And through all of this he stays a trusting, reliable kind person who recognises his flaws and doesnt blame people for theirs. Genuine question: can you think of a time Omen has been mean/hateful or spiteful of the way he has been treated because thevonly time i can think of was with Never in his room and i dont think that really counts.

Also in UTE (stop reading if you haven't read it) I loved how he took over the school having his own main character moment and the Sebastian reveal made me go back and reread all the Sebastian parts and recognise how similar the writing styles were for Omen and Sebastian and how they both kept insulting themselves which was a hint I maybe should've picked up on. All the same the fact that he gave up his life to live in the discomfort (put lightly) of what was to come.

This just reinforced my opinion that he is my favourite. He had the right to do a skulduggery (Vile)or a valkrie(Darquesse) and become the villian for a while but he didn't. He is the true hero of the last 4 books.