How Did We Miss This One?, Needs a Better Title, Needs More Examples, etc. Alternate Universe trope. Alice has somehow stumbled across an Alternate Universe. Before she can find her way back, she meets her best friend Bob, who jumps at the opportunity to help her, good friend that he is. But just then, Alice's will begins to falter. Bob doesn't understand and Alice is forced to explain: "You've been dead for years." Unlike every other alternate character who is nothing more than a superfluously fun re-interpretation of the ones we really care about, Bob is truly the Last of His Kind. And the moment Alice re-enters her world, he will be gone again. There are three versions of this trope:
- Independent: a true Alternate Universe which exists regardless of Alice's involvement.
- Full Replacement: an Alternate Timeline that has completely replaced the original.
- Only A Dream: a dream or hallucination that doesn't exist anywhere outside of Alice's mind.
- In Fringe, we learn at the end of S2 that in the red universe Olivia's partner and best friend Charlie is still alive.
- In the Star Trek The Next Generation novel "Q-Squared", Jack Crusher is seen alive in one of the alternate universes shown in the book, and finds out from Trelane that it's the only universe in all of cosmic existence where he wasn't killed during Picard's command. He doesn't take the news very well at all.
- Star Trek: The Next Generation episode Yesterday's Enterprise, consistently ranked as one of the series's finest. Tasha Yar discovers from Guinan that she won't survive the return to the proper timeline in any form, and decides to give her life to make sure the restoration goes off as planned.
Hello, Unknown Troper. You'll need to get known to lend a hand here.