obvious stator - Someone who feels the need to make sure you know the obvious

Someone who feels the need to make sure you know the obvious things like they’re the only person who could possibly not know.

‘You’re all here. Obviously, this is a party.’, said by the person who brought the snacks.

‘The sky is dark. No one is in doubt.’, said by the person who just said it 3 minutes ago.

‘You’re sitting. You can’t miss that.’, said by the person who has been sitting for 30 minutes.