Immediately after retrieving the Morality Core, and plugging it into GLaDOS, the system doesn't appear to be phased at all other than a scream, which leads into this video's events.
NOTE: The 2nd scene takes place after the credits.
Add "&fmt=18" to get to a much more preferable High Quality version.
Author's note: This ending makes so little sense it's pathetic. The G-Man cameo just seems coincidental because, to date, he hasn't actually shown up at all or had any relevance to the Portal games.
A request: Stop calling this an official prequel. It's not a prequel at all, just a fan-based theory about as credible as Zero being some kind of crazed Wilybot that killed Dr. Light, Dr. Wily and all of them.
![](https://i.ytimg.com/vi/DOWIw3VT2W0/mqdefault.jpg)