Theona is the spawn of quintessa and was meant to join prime and his crew to kill them all, especially bumblebee, and stay loyal to Megatron and stay as his right hand woman, but after Theona learned out the truth of what they were doing she realized that they were in the wrong and choose prime over Megatron. She eventually had to go into hiding so they don't find her but eventually a high schooler found her and repaired her and she got back up on her feet and found prime and found out there was a war and she had to fight against them, she eventually fought, but she got powered off by Megatron and the high schooler repaired her again and soon was free from their control because of the chip ( which was her brain ) inside her and gave her a new one, and then she was free from their control, but still had the power of them.