Fantastic Four #36

In "Les hommes-monstres," a scientist obsessed with building a time machine finds his friends testing a prank on him—only to accidentally trigger a real journey into the future. When one of his companions peers through the door and sees robot slavers approaching, the inventor dismisses it as another joke, destroying the machine’s controls in disbelief. But seconds later, a mechanical hand crashes through the door, shattering the illusion of a harmless prank.