Freeing the Possessed

"(Jason Lee Scott shoots the sword of darkness with his blade blaster) It's all over, Tommy! (The Sword of darkness is destroyed and Tommy Oliver is freed from the evil spell and demorphs)"

- Jason Lee Scott destroys the Sword of Darkness, freeing Tommy Oliver from Rita Repulsa'a evil spell

In any story (usually horror, science fiction or fantasy), the protagonist or someone he or she loves gets possessed by an entity (usually a witch, sorcerer, ghost, demon, alien, or other malevolent force). This is when someone has to free that person from the entity's possession, especially when it comes to saving that character from falling into the villain's clutches, removing the demon inside, or liberating him or her from the antagonist's thrall.

Examples

 * Kaa hypnotizes Mowgli and is about to eat him when Bagheera notices this and gives the snake a smack on the jaw, freeing the boy.
 * Rowan North, in ghost form, possesses Abby, who is about to throw Jillian out the window. Patty arrives in the nick of time to tackle Abby and give her a sharp slap across the face, freeing her from the demon inside.
 * Regan MacNeil was possessed by Pazuzu but she was free by Damian Karras who sacrifice his own life to save her.
 * Harry Potter gets possessed by Lord Voldemort, but he is freed by love and friendship.
 * Scuttle yanks off the shell necklace on Ursula/Vanessa's neck, causing it to break on the deck, giving Ariel her voice back and freeing Prince Eric from the sea witch's possession.
 * Karai gets brainwashed from the Shredder by using a brain worm, Leonardo tries to help her to fight it off but failed, however Master Splinter uses his healing hand technique to free her from the Shredder's control.
 * Shanti is hypnotized and about to be devoured by Kaa when Ranjan pulls her away and attacks the snake to free his friend.
 * Aladdin smashes Jafar's staff on the floor to free the Sultan from the sorcerer's power.
 * Kubo is possessed by the Garden of Eyes, but just as he's about to float into its maw, Beetle is able to blind the monster and free him.
 * Ash is possessed by the villainous King of Pokélantis. However, Pikachu was able to hear Ash's voice and zapped him with his thunderbolt attack, freeing him in the process.
 * Vida Rocca gets possessed and turned into a vampire by Necrolai, but Chip was able to remind her who she was and broke the spell.
 * Ginevra Weasley gets herself possessed by Tom Riddle's diary and was forced to open the chamber of secrets. However, Harry Potter was able to destroy the diary with the Basilisk fang and free her.
 * Darkwing Duck, Binkie Muddlefoot, Honker Muddlefoot and Launchpad McQuack are possessed by the Brainteasers, but Gosalyn Mallard manages to free them all.
 * Gohan, Goten and Trunks are infected by Baby. However, Kibito Kai uses the sacred water to free them from Baby's mind control.
 * Vegeta becomes possessed by Baby and was turned into a Tuffle in order to accomplish his plan for revenge. However, when Goku became a Super Saiyan 4, Baby lost full control of Vegeta when Goku blasted off his tail.
 * Bumblebee breaks Optimus Prime free from his Nemesis Prime persona when the young Autobot regains his voice in  Transformers: The Last Knight .
 * Tommy Oliver is freed from Rita Repulsa's evil spell by Jason Lee Scott who destroyed the Sword of Darkness with his blade blaster.
 * The Undertaker frees Nicky Diamond Jr. from Captain Doody's possession with his signature taunt the throat cut.
 * King Richard snaps out of Sir Hiss' hypnosis and returns home, immediately reclaims his throne from his brother Prince John upon discovering his terrible deeds and has him, Sir Hiss and the Sheriff of Nottingham along with the Rhino Guards and Wolf Arrowmen arrest for their crimes against poor people.

Quotes
"GET OUT OF MY FRIEND, GHOST!"

- Patty giving Abby a wallop to free her from Rowan North's possession.

"(Bumblebee: I-I am Bumblebee... Your oldest friend!) [Nemesis Prime halts his attack at the sound of the young Autobot's voice.] (Bumblebee: Optimus... I would lay down my life for you.) [Nemesis Prime's optics turn from purple to blue, indicating that Optimus Prime is back to his normal self.] Bumblebee... Your voice... I have not heard it since Cybertron fell. [The red mark on Optimus' face vanishes.] What have I done?"

- Bumblebee regains his voice in time to severe Quintessa's control over Nemesis Prime, thus allowing him to become Optimus Prime once more.