When you were a kid building elaborate sand castles on the beach, he was the kid who came over to wreck it. These kids usually had low self-esteem because they weren't able to take part in a constructive activity for whatever reason. Then they became resentful of any progress by others, so they tried to destroy it.
Look at this thread for the latest. This relates to episode 2, if you're filling out the scoresheet.
Mason built this sandbox for all of us. I wish he'd learn to play nicely in it.