Hart is a dangerous terrorist who came to Central City to kill thousands of innocent people.
Task Force X were tasked with bringing in Hart. He attempted to swim away, but King Shark intervened, grabbing him by the leg. Helping by tying him up with an arrow, Cupid allowed Lamden to interrogate the terrorist. However, The Flash set him loose, unknowing of his terrorist status. As he got away, he called an associate, claiming to be right on schedule.
That night, he made his way to a Saeger Enterprise building, where he planted a bomb. He was intercepted by the Suicide Squad and A.R.G.U.S., but used an explosive to make his getaway. Taking care of the bomb, The Flash sped down to Hart as he exited the building, tying him up, allowing for A.R.G.U.S. to take him.