Being an accidental result of an experiment that didn't go as planned, (y/n) does anything in her power to search for her missing creator after seeing evidence of forgotten memories. The creator, Donatello, was a normal human scientist till he discovered mutagen. He saw what he is capable of with this new substance and experimented with it. When what he was anticipating to have happen didn't go as planned, he fell in love with the result and never regretted the mistake. After discovering where her creator disappeared to, (y/n) realizes that what she remembers of him is nowhere near the same as what he is now that she's found him.