Chroma appeared in the skies of LA above an outdoor rock concert, mesmerising everyone with a "song" about the end of life on earth. The members of Infinity Inc. battled Chroma and rendered him unconscious. Chroma was taken to hospital and when he revived, he revealed that he had been feigning his condition so that he could study human reactions. He claimed he had arrived from deep space simply to sing his song of doom and to see how humans would react to his message.
The Infinitors battled among themselves while they decided how to tackle Chroma. In the end it didn't matter, because Chroma, happy with what he had seen, left the Earth.
Chroma was seen being slain during the time Gog and Superman from the Kingdom Come came through a portal.
Chroma, who looked very similar to the Rainbow Raider, is decapitated by Grodd. His head is placed on a spike and can be seen when the Rogues return.