VIDEOS:
(Spoilers) "Who... are you?"
While going to bury Sonic's body, Amy unintentionally uncovers the head of her universe's Tails, revealing the one with her to be the same Tails from "The Secret History of Sonic and Tails".
Example of:
The Reveal
C&C: Red Alert
Example of:
Piggybacking on Hitler
Split twist
Example of:
The Reveal
Control
Example of:
Stealth Sequel