Bax and Haya are two special enemies in Act 1. They have an Awakened state that causes them to unlock additional moves. This will show a yellow star next to their health bar when active. The conditions for this are different for each enemy. Bax requires HP <= 50%, whereas Haya requires LP >= 50%. Once you damage Bax down to 50% or less health, he will retaliate with new lust attacks!