The Eternals first appeared in The Eternals #1 (April 13, 1976).
The Eternals #1 – The Day of the Gods released by Marvel
The start of King Kirby’s very own cosmic series! Deep in the God Chamber, archeologist Daniel Damien and his daughter Margot learn from their assistant, Ike Harris (aka Ikaris, an Eternal) that he must activate the Cosmic Beacon deep within the God Chamber! But Deviants Kro and Brother Tode have another plan for Ikaris in mind…