The Brave and the Bold, Vol. 1

Xotar, a weapons master from the future, has travelled back in time to defeat the Justice League. He needs to test four weapons to find the most powerful one, so that he knows what will hold off the Intersolar police of his own time. He takes posession of Snapper Carr, and uses him to lure the Justice League into his trap. All but Superman arrive, and handily defeat the first three weapons. The fourth, however, is another matter entirely.