Never Back Down From a Brute

When a monstrous giant or mighty beast is wreaking havoc or a thuggish brute is on the loose, someone has to take a stand. The said brutes can also be guards, the villain's henchmen, dictators, fascists, Nazis, or monstrous animals.

The hero can stand up to a brute to: The most famous example is David standing up to Goliath to save Israel, in addition to Indiana Jones battling the German mechanic.
 * Prove his worth in a test of strength
 * Rescue someone
 * Save a town, kingdom or city

In some cases, when the hero takes down the brute, it can lead to the latter's redemption.

Noteworthy Examples

 * Queen Elinor stands up to Mor'du to rescue Merida.
 * Ron Weasley brings down the Mountain Troll by knocking him out with his own club to save Harry and Hermione.
 * Indiana Jones often stands up to thuggish brutes, like when he fights the German mechanic and Colonel Dovchenko.
 * Gru stands up to El Macho to save Lucy Wilde.
 * Judy Hopps and Nick Wilde battle Bellwether's thugs on a moving train.
 * Garrett stands up to Ruber's men to protect Kayley.
 * Wreck-It Ralph stands up to Arthur, who transforms into a giant Ralph, to rescue Vanellope.
 * Goona stands up to Lord Nooth's guards to protect Dug.
 * Danny Cat stands up to Max, leading to a fierce battle on Grauman's Chinese Theater.
 * Mulan stands up to Shan Yu and defeats him to save China from his tyranny.
 * Percy Jackson stands up to and fights the Minotaur to save Grover Underwood.
 * Hercules, motivated by Phil's encouragement, stands up to the Cyclops and brings him down.

Quotes
"YOU PUT HER DOWN!"

- Wreck-It Ralph standing up to Arthur to save Vanellope von Schweetz. "(Hermione is upset about her disagreement with Ron and walks into the girl's restroom. Thunder crackles. Hermione looks up to see the enormous Mountain Troll towering over her, and her eyes widen in terror. Gasping, she backs up to a stall and runs into it. Suddenly, without warning, the monster swings his massive club, smashing it to pieces! Hermione screams and tumbles to the floor. Harry and Ron run inside to notice the commotion. Hermione pushes away some splintered wood.) (Harry: Hermione, move!) (Hermione begins to crawl away, but the troll swings his club once again, splintering the nearby stalls. She cries out in terror and with that, Harry and his friend begin to toss pieces of wood at the troll to distract it.) Hey! Pea-brain! (Ron tosses a piece at the troll's face, getting his attention. Hermione crawls under the sinks, but the brute notices her and brings his weapon down, smashing one of them.) (Hermione: HELP!) (Harry runs over to the troll and wraps his arms around its club, allowing him to hop onto the monster's head. The troll flails around, and Harry hastily drives his wand up one of the thug's nostrils.) Eugh! (Hermione wrinkles her nose at the sight. The troll sneezes. Harry grabs the troll by the ears and he throws him off. The monster grabs him by the leg.) (Harry: DO something!) (The troll swings his club, missing Harry's head.) What?! (Harry: ANYTHING!) (The troll roars and swings his weapon.) (Harry: Hurry up!) (Hermione: Swish and flick!) (Ron brandishes his wand.) Wingardium leviosa! (At these words, the troll's club levitates in the air. The monster looks up and suddenly, the club comes down on its owner's head with a loud smack. A smile comes across Ron's face.) Cool. (With a gurgling groan, the troll spins around, releases Harry, and tumbles to the floor with a crash on his face.)"

- Ron Weasley standing up to the Mountain Troll to save Harry Potter and Hermione Granger.