Rebecca is one of the lead agents of the Foundation, but given her history with Control it's no longer clear where her loyalties lie. Her actions led to the death of Jake in the Season One finale.
Behind the scenes Edit
Many fans have noticed that Rebecca and Jake's shadows do not behave as they should, moving towards light sources in an unnatural way. Speculation is that these characters are Outsiders, given Rebecca's connection to Control and theories about Jake's connection to The Reapers.