Want to try Speedy here with xmxssops015 Warlock. Plasticity lets him break away from his HHS attack on anything but a 1. Shape Change gives him another chance to roll out of an attack. And B/C/F gives him a 66% chance to do more than 2 damage on those later clicks.

Warlock is still good on him, but as far as breakaway is concerned he doesn't actually need the Plasticity since he's already got Improved Movement: Characters.