Bart Thatcher

Bartholomew "Bart" Thatcher (バーソロミュー・「バート」・サッチャー), self-styled as Inertia, is a superhuman criminal from Centre City. After Kane's particle accelerator incident, Bart gained the power to alter the flow of time relative to himself.

After escaping from CCPD, Bart challenged Lightspeed and defeated him, going on a crime spree until being confronted by the Stryker. Afterward, he was defeated by Lightspeed in a rematch and was sent to the Vault.

During Shadow's raid on Ultimate City a few years later, the Vault was destroyed and Bart was able to roam free.

Trivia

 * Bart's name is a nod to both DC Comics supervillain Thaddeus Thawne, other wise known as Inertia, and superhero Bart Allen, the fourth Flash.