Responses
Grayson is probably better described as ultra dominant, he was born manifested, he releases more pheromones than a normal dominant alpha and is also stronger.
And he is not as dense as Chase.
Greyson have a really sensitives nose to smell omega like on the previous story of Keith&Yeonwoo (Kiss Me Liar). I have the feeling that Greyson will smell Joshua pheromone right away :v