Kid Eternity(no secret identity, from Quality / DC)

In the midst of World War II, a teen-aged boy who was believed to have died was taken to Heaven, where it was discovered that it was not yet his time. Unfortunately, he could not be returned to his body, so he returned to Earth as Kid Eternity with his spirit guide, Mr. Keeper. Kid Eternity uses the magic word "Eternity" to summon historical figures to aid him in fighting the forces of evil.