Collette Phan, better known as Rush, is an unlockable Agent as part of the Contingency Plan DLC. She is unlocked the first time you play with the purchased Contingency Plan DLC enabled.
Rush won gold in the High-Altitude Dive and the 5000m Dash at the 2050 Augment Games. 'Augletes' don't often make it to retirement - the experimental nature of their augmentations tends to catch up with them before they cash out - but Collette was on track. And then the Resource Wars broke out.
Seeing her sponsorships dissipate overnight and facing the prospect of being drafted into the notorious Ground Brigades, she opted to join the PEIA. Her high profile makes her unsuitable for social infiltration work, but her raw athleticism comes in handy once subtlety fails.