The Radioactive Power-Absorbing Crystal is an object used by Lord Hater to absorb Wander's shrinking powers before he can shrink Hater and his army. Since the crystal was only used in the hypothetical invasion plan, it might not actually exist.
As It's name suggests, the crystal's main power is to absorb radioactive powers. This takes the form of the one with the powers being absorbed have his or her eyes go blank, and the powers coming from his/her mind in some form of ghostly flow.
The crystal is colored red and can shine extremely bright like a disco ball.