Infinity-Man is a 10-foot creature. He has a shining yellow hide, with blue plating on the chest, shoulders, wrists, lower legs and hips. He wears a helmet that hides his eyes. When possessed by the father box, it takes on a red and black color scheme.
When the Forever People were outmatched by Intergang and their alien technology, they fused together to form Infinity-Man and trounced their opponents.
When they attacked Intergang at their base, Bruno Mannheim threw a Father Box at Infinity-Man during the transformation sequence, putting Infinity-Man under Desaad's control. With help from the New Genesphere, Superboy managed to gain control of Infinity-Man and rid it of its Apokaliptian control.