Per carterba’s suggestion:
Unboxed spoilers from here on. Stop scrolling down if you don’t want to know.
I still stand by my prediction in the original thread about the final episode (of Season 1?): It will be The Monarch who brings Hank and Dean back.
Dr. Venture doesn’t even like the boys; he’s not going to go to any real effort to clone up a new set. And as for Dr. Orpheus, I’m just not convinced he’s got the skills. Sure, he can do some cool party tricks with his hypnotism, but can he pull a double-Lazarus? I doubt it.
The Monarch’s the only character with both the motivation and the ability to undo the damage he brought about. Firstly, The Monarch is one of the the few characters on the show that actually seems to like the boys. Maybe he likes them too much (“He was getting all creepy uncle on us…”). Once The Monarch realizes that his order to have Hank and Dean killed was due to a post-hypnotic suggestion, he’ll be wracked with guilt and almost certainly want to put things right.
Secondly, while The Monarch is probably one of the most inept super-villains ever, he does have access to Grover Cleveland’s Presidential Time Machine from the opening of the Are You There, God? episode. I think he could probably figure out how to use that well enough to neatly lop off the final scene of the final episode.
Unlike ed, I think this will get resolved. The Venture Bros. doesn’t seem to go for the punch-out endings like South Park or Sealab 2021. For example, I thought the joke about Sally Impossible being pregnant was just a throw-away at the end of the Ice Station Impossible! episode, but if you look closely at her in the Christmas special, she’s definitely knocked up. They don’t start from scratch with each episode on this show.