“The Fantastic Four: First Steps,” “Squid Game,” “Superman,” and “28 Years Later” all put newborns through the ringer.

The Fantastic Four: First Steps presents its titular super team with a nightmarish trolley problem.

Galactus (Ralph Ineson) promises to spare Earth from total annihilation, but only if Reed Richards/Mister Fantastic (Pedro Pascal) and Sue Storm/the Invisible Woman (Vanessa Kirby) give up their newborn …