History Main / OminousMessageFromTheFuture

* "[[https://archiveofourown.org/works/42198018/ Harry Potter and the Ritual of Love's Memory]]" opens with most of Harry's friends being killed during the raid on Gringott's and the subsequent battle at Hogwarts, leaving Harry on the run with his few remaining allies of George Weasley, Angelina Johnston and Luna Lovegood. Seeking a way to avert this version of events, they find a ritual that allows someone to send a memory of a key moment with a loved one back to an earlier version of themselves, essentially intended to encourage people to have more time with the one they love. Choosing a memory of his first day as a couple with Ginny as he distinctly recalls thinking about horcruxes at that moment, Harry is able to send the memory back to the day after the first Triwizard task, creating hope that his past self will be able to use that advance knowledge to turn the tables on Voldemort.

* One episode of ''Series/{{Castle}}'' has a man who claims to be an agent from the future sent back to stop an assassination, probably a homage to ''Film/TheTerminator''. He comments on an upcoming 'energy war', though assures the two leads that the good guys win. He's labeled as delusional, [[MaybeMagicMaybeMundane though the ending of the episode leaves it ambiguous]].

* In ''ComicBook/TransformersMoreThanMeetsTheEye'', a message is sent back by an unknown person full of warnings about things the ''Lost Light'' should not do or else Bad Things will happen. Unfortunately nobody hears it [[spoiler:and the ''Lost Light'' crew merrily goes about unwittingly doing more and more of them over the course of the series]].

* ''WesternAnimation/TimeSquad'', On a mission to help Samuel Morse, the Time Squad gets unwelcome company as their decrepit selfs from 60 years into the future appear to give them an important message. The problem is, they're all senile, and don't remember what said message was and stay to annoy the present squad until finally, Older Tuddrussel remembers to tell his whippersnapper counterpart [[spoiler: to return the book he checked out of the library, as 60 years of library fines add up]].
* ''WesternAnimation/TransformersWarForCybertronTrilogy'', Galvatron uses time travel to warn Megatron, his past self, about his future, in which he will be turned into a servant of Unicron, a planet-sized godlike Transformer that can devour entire worlds. However, Galvatron's intentions are very much selfish, as he wishes to use the Allspark to kill Unicron and free himself from servitude rather than revitalize the planet Cybertron, essentially dooming millions of its inhabitants to die for his own sake. [[Main/EvenEvilHasStandards Even Megatron is horrified by this,]] and while he initially still works with Galvatron and [[Nemesis Prime]], he ultimately [[betrays them]].
* ''WesternAnimation/WolverineAndTheXMen2009'', Professor X from 20 years in the future is able to telepathically communicate through time with the present X-men. He warns them about the future devastated by Sentinels and how the majority of the X-Men were killed.

* The events of ''VideoGame/EarthBound'' are set in motion by the time traveling insect Buzz Buzz from the future, who warns Ness that [[BigBad Giygas]] has destroyed the world in the future and that a boy named Ness would defeat him.

** Another episode, "[[Recap/StarTrekVoyagerS5E6Timeless Timeless]]", is set 15 years into a future in which Voyager’s attempt to use an experimental quantum slipstream drive resulted in the ship crashing into an icy planet. The entire crew was killed, save for Harry Kim and Chakotay who were aboard the Delta Flyer at the time. They have a plan give a new set of phase corrections to Seven of Nine in the past so the drive works correctly. The corrections don't work, but Kim figures out a new set of corrections which collapse the slipstream instead, saving everyone aboard. Along with the corrections, the future Kim sent a message to his past self explaining what happened, but if he's seeing this all that's changed.