Solis gained his mastery of light when he and his childhood friend stumbled on some invaders from Apokolips attempting to detonate an energy bomb which effected both their troops and Solis. After his body had time to adjust, Solis tapped into this power to become the New Genesis hero named Lightray. He followed Orion to Earth-One to combat Darkseid's forces although he did so reluctantly as he's peaceful.
Happy Terrill was a reporter who obtained his power over light when he was struck by mysterious energy atop a Professor Styne's Strato-Balloon. He adopted the alter ego of the Ray and had a solo career as well as being a member of the All-Star Squadron. He then journeyed with the Freedom Fighters to Earth-X to aid that world rid it of the Nazi menace.