Heroic Witness

When the heroes' friends or family member saw the main antagonist kidnapped or talking with someone else, they realize that their love ones or heroines need helps. So they can stop them or try to find the main protagonist before it's too late.

Sometimes, they don't know until they saw that the main antagonist is revealing their plans to the heroines after kidnapping them. So they listen and decide to be the hero or get the main protagonist to save their love ones.

Examples

 * Nico and Pedro witness Nigel attack Jewel and bird nap her.
 * Scuttle discovers that Vanessa, the woman Prince Eric is going to marry, is really Ursula when he sees her look into a mirror and the reflection is Ursula's.
 * The Forest Animals realize that the Old Peddler Woman is actually Queen Grimhilde in disguise when they see two menacing vultures behind her.
 * Rick Grimes realized that Shane Walsh is setting up a plan to kill him.
 * Glenn and Daryl realized that Randall they were going to let free found out he had a broken neck and realized it actually Shane who did it.
 * Judy Hopps and Nick Wilde witness Doug make a serum from night howlers and how he caused predators to go savage.
 * Sonic and Tails witness thousands of aliens in need of saving being turned into negative aliens by Eggman.
 * Woody and Andy's toys witnessing Buzz Lightyear falling off from the window.
 * Cyborg Beast Boy Starfire and Raven (too late) witnessing Robin under Slade's mind control
 * Twilight Sparkle witnessing Princesses Luna, Celestia, and Cadence, turning to Stone
 * Shadow witnesses the arrival of the Black Arms.