Shamrock

Shamrock is a member of Faultline's crew. She is the only test subject to have escaped from Cauldron. She is romantically engaged with Gregor the Snail. 

Powers

Shamrock manipulates probabilities, choosing a specific outcome and making it significantly more likely to occur.

Involvement in Cauldron

Speculted to be test case seven-seven-seven, Shamrock is the sole escapee from the Cauldron testing complex. She was considered a Special Case within Cauldron, making her escape even more impressive.