Considering I have a group I think it should be fair to discuss all three even if Vernon is the MC.
Vernon has a much more easy going life up until a certain point... His older version would probably hug his younger self and cry while talking about all the things he is sorry he did, while his younger self is sitting there consoling him not knowing what the heck is going on.
Grey would probably lecture his younger self... He was quite the edgy teen (even if he had reasons to be) so he would probably spend a good while telling his younger self some of the lessons he learned over the years. And his younger self would probably not listen and tell his old white ass to piss off.
Azreth ... Well... Azreth's only growth ever since he was a child was that he is a slightly less naive and a lot bigger (like physically) than his younger self. Azreth grew very little mentally... He is hornball and his younger self was even hornier because of you know 'teen spirit' and because dragons in my story undergo a much faster development... So yeah, you can probably guess what happens when he meets himself.