Shattered Glass Specimen 4

In Shattered Glass Riot day never happened, which led to many more Specimens either dying of pain, torture, or "naturel" causes, while the surviving Specimens kept on surving through the body mutations, torture, and the operations.

Over the years, Specimen 4's body had changed. Some of her organic parts were replaced by metalic parts to make her more appealing to the buyers. But even after those painful operations she was still deemed useless by the foundation. So, the foundation members left the island with the successful Specimens while the failed ones were forced to stay and die.
Lucky for the failed Specimens, the mutants had arrived and helped them out. Almost all failed Specimens decided to move to the bigger island, while 11 Specimens decided to stay on the small island. One of the 11 Specimens was 4. She and the remaining Specimens watched as the rest left the small island. She and the others still visited the big island, but still remained living on the small one. 

Years later, a group of decepticons arrived on the small island and encountered 4 on a patrol. At first, she saw them as a threat but over time she befriends one of them slowely, and eventually teams up with the decepticons.