Iris Flynn's father, Garcia Flynn, worked for the Nation Security Agency. One day, Garcia noticed something called "Rittenhouse." Garcia asked what it was out of curiosity, and in retaliation the organization Rittenhouse murdered Iris and Lorena Flynn, Garcia's wife, in the night with silenced weapons. Garcia was framed with these murders.
Since this event, Garcia has stolen a time machine called the Mothership and has been traveling through time to try and stop Rittenhouse to save Lorena and Iris. If Garcia ever manages to save Lorena and Iris, he plans to leave them because he feels he is unfit to be a father after all of the terrible deeds he's done to save them.