Gross talked about an “island.” It’s possible that this is where Finn’s mom is living, and that she experimented with adding mods to humans in order to help them survive. There’s still a chance that Susan could be his sister, just altered/evolved by Finn’s mom to be stronger so she could find Finn and bring him back home. In the alternate universe, Finn had a baby sister. Plus, she would of course be looking for her son all this time. That kind of fits if Finn’s mom disappeared somewhere in the ocean. The person who’s trying to find Finn has a lab out in the middle of the ocean. Every story Finn’s dad shares is slightly altered and fabricated, so it’s possible that she left him, but he doesn’t want to share that part. Remember, she was lost at sea, according to Finn’s dad Martin, although he didn’t like to talk about it. Our guess is that this mysterious figure trying to track Finn down is Finn’s mom. Once her chip was activated, her only goal was to retrieve Finn and take Finn “home.” Gross made a weird statement that seemed to indicate Susan Strong was programmed by a rival group of some sort. One thing we know for certain is that the “person” who programmed Susan Strong wasn’t Dr. Here’s a picture of that person’s lab above. Who was looking for Finn? Who had programmed Susan Strong and made her a “cyborg” of sorts. This is the biggest question that we’re left with at the end of Reboot. Who Was Looking for Finn in Reboot? Who Programmed Susan Strong? (Cartoon Network/Adventure Time) Let’s unpack the episodes and figure out just what’s going on. Preboot and Reboot aired together and left us with a lot of questions. Adventure Time aired its season 7 finale a weekend earlier than most viewers were expecting to see it.