[Dash Darington]

I think Marc is writing his own arc. He came in and established dominance immediately with aggressive behaviour. With that accomplished, the biggest thing he has to do is mollify the audience's negative reaction before he's nominated (to limit votes to evict), and gain public support before the final (to gain votes to win). He's in phase 2 right now.

If he lasts long enough he'll act out conspicuous acts of kindness. Possibly directed by the producers, like Darren's 'Tin Man has a Heart' task. People like him are very predictable with setting the bar low "yeah that's right, I am a jerk" and then any positive behaviour is seen as some glorious breakthrough. It's all calculated, but it works.