Jactitation: The ability to absorb kinetic energy and use it to prevent oneself from ever becoming immobilized. As a superpower, the poster boy for jactitation is Hellfire Club member Sebastian Shaw.
In ICONS Great Power, the Absorption power allows you to absorb energy attacks to avoid physical damage, and then do something with that absorbed energy, such as release a concussive Blast attack, boost an ability score temporarily (Ability Boost), or heal yourself. If you want to add jactitation to your ICONS game, I suggest making it a new stunt or extra (i.e. permanent stunt) of Absorption. Since the Absorption power as written in Great Power basically covers the physical attack stuff that could potentially immobilize you, I would limit Jactitation to preventing mental attacks aimed at immobilization:
Jactitation: You may use absorbed energy to avoid being immobilized by a mental attack (Mental Blast, Mind Control) as if you had Mental Resistance equal to your Absorption power level.
Short and sweet. Thanks again for reading!