Clara Schwartz - Rex Schwartz’s first daughter.
She was abducted and killed in a Kermac plot to force Rex to work for them. Rex found the perpetrators who had her and ended them as gruesomely as his intellect and resources allowed him to.
Rex vowed he would not rest until he had wiped the Kermac off the face of the Universe. As a reminder, Rex had Yvonne created, the most advanced android in the Galaxy and perhaps the most capable battle robot. Yvonne carried the imprint of Clara, his first daughter, and looked exactly like she would look as a grown woman.