Heck still occasionally worked at Marvel, penciling the odd issue of "Daredevil", "Sub-Mariner", "Ghost Rider", "The Avengers" and others in the mid-1970s. He drew "Giant-Size Avengers" #4 which featured the wedding of the Vision and the Scarlet Witch. Writer Tony Isabella and Heck launched the new superhero team book "The Champions" in October 1975. But in 1977, he began working almost exclusively for DC. Heck explained in 1985, "I left Marvel for a change of pace. I kept getting all the new inkers. Everyone who walked in, I got them. A bad inker can kill artwork. I once got some pages back from inking and I just tore them up, that's how bad they were."