Challengers of the Unknown — DC Comics
Issue: #1
Last valuation update: 2026-09-09
“The Man Who Tampered with Infinity.” A mad scientist uses an “infinity machine” to teleport monsters from other dimensions. “The Human Pets.” An alien boy collects “animals.”
First appearances: Abner Jenkins, Olan Tagorian
Creators: Whitney Ellsworth, Jack Kirby, Marvin Stein
Characters: Ace Morgan, June Robbins, Prof Haley, Red Ryan, Rocky Davis, Abner Jenkins, Olan Tagorian