Yes, him. He is a dominant omega so he can cause pheromone shock on dominant alphas etc, he was in the military, he is physically strong enough to survive one of Grayons uncontrolled hugs lol, he is pretty selfconfident, he is actually a sex addict, he is into BDMS, he has the most perfect chest in Grayson's eyes (Grayson gave it a name lol) -he can handle Grayson.^^
He made Grayson suffer. 1.They fought, before Grayson started to get interested
2. Grayson is not Dane's type. 3. Dane is a relationship red flag due to family related trauma, and it's a massive problem.
Furthermore Grayson suffered seeing Dane's habit of not caring for his own life.
All that resulted in Grayson having a few traumas, but also very good character development.
But in the end he sees Grayson more like a pretty, cute golden retriever puppy.lol And Dane doesn't hurt animals.
Yep, he normaly is the one in charge as in tieing up the other etc.

I keep seeing his name in the comments.