Edith Freiberg had the power to absorb and redirect kinetic energy (motion). After being recruited by Nighthawk to the team of super powered "Redeemers", she was one of the Redeemers who joined the Squadron Supreme's "Utopia Program" in hopes of stopping it. Inertia was then revealed to have joined the Squadron as a double agent. During her time in the Squadron, she developed a romantic relationship with Haywire. Alongside Nighthawk's Redeemers, she attacked the Squadron Supreme. During the fight, she battled and was defeated by Doctor Spectrum.