[quote=@whizzball1]
<Snipped quote by Etcetera>

I know that any Tier Four can just travel dimensions at will. So how do we keep Nobles locked up?
[/quote]

I don't know if they can travel through dimensions without their Nobilities. For the record, I made that up on the spot and think it's great. But the dimension is also locked. Locks can be broken depending on the strength.