What they do know about their powers is that they are caused by a relatively rare, anomalous gene. Someone with this gene can be either a Level 1, 2, or 3 anomaly. Level 3 anomalies can go through their entire lives and never be affected by the gene.
Level 2 anomalies can subconsciously use their powers throughout their lives. They have no control over this power at all. However, it is possible for a Level 2 to become a Level 1.
Level 1 anomalies know they have their powers and so can control them.
Since the triggering of their own powers, they have also triggered the powers of their siblings, Taylor's ex-girlfriend Rachel, and two brothers from Boston named James and Blake. They have met up with a girl from Australia named Jo, who's powers were already triggered.
Joanna is a Level 2, as all her powers are Level 2. Her known powers are:
Intelligence - allows her to memorise and learn at incredible, inhuman speeds.
Invulernability - stops her from being physically harmed in any way.
The Hansons were doing a live interview on a new show hosted by the Olsen twins when the studio was invaded. Through the use of their powers, Isaac and Taylor managed to unnerve and unarm the thugs. Then at the last moment, one shot at Zac. While Isaac pushed Zac out of the way, Taylor sent a probe into the thug's head…