Time cops, to police the time stream, Indy 5, "fissures in time", one character says, errors in the time stream. Last movie of Indy, mathematician, Archimedes, a dial is the artifact they are looking for, in the below, bifurcations in Fantastic Four 354, i have this comic still, sold most of my collection, this one i own in my apartment

Synopsis for "The Cross-Time Express!"

Cornered by the Time Variance Authority in the Null-Time Zone while trashing the place, the Thing and Human Torch take a pause when Mr. Mobius orders them to stand down. He has Sharon Venture as his prisoner and has now offered to change history so that Ben never becomes the Thing and remains human forever. Ben pauses to think about this and Johnny tries to talk him out of it, saying that if history is changed there is no Fantastic Four. Ben considers it and realizes that if there is no Fantastic Four then the team won't exist to travel into the future and stop Galactus and the Time Bubble.