Heroic Sacrifice/Western Animation

"Leela: *reading off a candy heart* "U leave me breath-less!""
 * In the season one finale of Avatar: The Last Airbender,
 * Also, at the end of season two,
 * Then, in the third season,
 * Also from season three, it is revealed through flashbacks that
 * South Park:
 * in the movie, earning a Crowning Moment of Heartwarming in the process.
 * Happens in "Cartman's Mom is Still a Dirty Slut" when
 * Satan (that's right, The Devil himself) perishes this way, killed defending the citizens from Man-Bear-Pig. It even counts as Redemption Equals Death, seeing as he's seen in Heaven at the end of the episode. A pretty weird end for the Prince of Darkness, but then, it's a pretty weird show.
 * Batman the Brave And The Bold: "I have an idea. Just not sure it's a good one."
 * destroys  at the end of Starro's invasion to save the planet.
 * At the end of one episode,  sacrifice   to save an island of people.
 * In "Long Arm of the Law!" lets himself get turned into stone when promised that it will keep his family safe. Because Kite Man is Chaotic Evil,
 * In the second episode of Ben 10 Alien Force,  dies. This is considered part of the reason Kevin agrees to help Ben for the rest of the series.
 * jumps in front of a lethal blast to save
 * In Code Lyoko, Aelita is sometimes a bit too eager to make a Heroic Sacrifice, despite the very strong disapproval of her friends (especially Jérémie). She actually went through it in Season 1 episode "Just in Time", but Jérémie managed to bring her back to the virtual world. Another close call was in Season 2 finale "The Key".
 * In the end,
 * The Fairly OddParents "Wishology": Jorgen Von Strangle and Timmy Turner. Jorgen, in the first part of the trilogy, Timmy at the end of the second part when  This is especially significant because
 * Fry does this a lot in Futurama.
 * Near the end of "Love and Rocket", he realizes that Leela's oxygen tank is empty, and that she is too busy fixing the ship in order to save the lives of the crew to listen to his warnings. He then plugs her tube into his own full tank and nearly suffocates, saving her life in the process.

": But you could get a new body. You could have a rich, full life! Big Bertha: I am trying to have a rich, full life!"
 * When confronting a getaway Space Bee in "The Sting", Fry throws himself in front of Leela so the bee would sting him.
 * "The Why of Fry" involves Fry infiltrating a Death Star-like Brain Spawn station with the almighty Niblonian's vehicle of choice—a "Scootie Puff Junior"—gambling on being condemned to an eternity in oblivion than risk Leela's safety in the end. Good thing
 * Fry did this yet again in Bender's Big Score.
 * Also, in "Into the Wild Green Yonder", Fry
 * Cannon robot Big Bertha in "The Prisoner of Benda," sacrificing herself to help the Professor save Emperor Nikolai by


 * In The Mighty Ducks' first episode,  throws himself into dimensional limbo to save the rest of the team and allow them to pursue Dragonus to Earth.
 * Also, in the episode "The Final Face Off",
 * Iron Man: Armored Adventures does this a few times. The first is when
 * Later attempted in the season one finale when
 * Codename: Kids Next Door:
 * In what is possibly the only existing example without any possibility of physical injury, Tommy Gilligan (Numbuh 2's brother) has just been assigned to Sector V. He saves the sector, and the whole organization, from being turned into animals by the Big Bad. However, by removing his DNA from the registry he is not allowed to be part of the organization, even though the others (who had never liked him) now believe he should be.
 * "Operation: F.U.T.U.R.E."; a common fan theory is that Sally Sanban (Numbuh 2's grandaughter) may have Ret-Gone herself by helping to prevent the Bad Future from occuring, especially since the altering of the timeline caused (as shown in the Series Finale) Kuki and Wally to eventually marry (which they did not do in Sally's timeline), thus altering the heritage of Kuki's family line.
 * He-Man and the Masters of the Universe;
 * Zigzagged in "The Roboto Gambit", Roboto plunges headlong into Tri-Klops' army of skeletal warriors to distract them so He-Man can get to the villain and destroy the device controlling them; Roboto himself seems to be destroyed in the process. There's even something of a Tear Jerker later, as Teela (who had doubted his ability to fight) mourns for him, but seeing as he's an android, Man-At-Arms manages to repair him.
 * Played straight, however,
 * In King of the Hill, Bobby becomes covered in a swarm of angry, venomous fire ants that cover their victims and kill them by all biting at the same time. However, Dale grabs his hand, allowing the ants to swarm onto him instead (Dale is an exterminator, and the ants have a grudge), whereupon they proceed to all bite him at the same time, nearly killing him. He gets better, though Hank first has the opportunity to cradle him in his arms and thank him for saving his son.
 * As in the comics example mentioned above,  on Legion of Super Heroes sacrifices himself to stop the Sun-Eater in the first Season Finale.
 * In ReBoot, in order to destroy Daemon, fragmented self in order to administer a cure to the Net.
 * And just before doing that, gives little Enzo a parting gift that alters his icon so that  well, , anyway.
 * In Superman: Doomsday, an internally-injured Superman, seeing Doomsday about to murder a child for the fun of it, flies him up past the atmosphere and then gives him the biggest bodyslam in history. The impact kills Supes, too.
 * Dinobot, in the Transformers: Beast Wars episode "Code of Hero", fights the entire Predacon force on his own to prevent them from altering history. He drives them off, but is mortally wounded in the process.
 * Luckily for him though, he got to die as he lived—quoting Shakespeare.
 * In the Transformers Armada episode "Crisis", Optimus Prime sacrifices himself to shield Earth from the Hydra Cannon. He comes Back from the Dead three episodes later.
 * In the season finale,
 * In Transformers Animated,
 * There's also
 * Arguably, might qualify, although it is non-fatal. He does, after all,
 * And now there's
 * In the Japanese Transformers: The Head Masters, Optimus sacrifices himself to stabilize Vector Sigma at the beginning of the season. This is his Final Death of the series, at least in animated form (there was later a toy line and manga called Battlestars: The Return Of Convoy, where he was brought Back from the Dead).
 * Wolverine and the X-Men gave one to a Sentinel named "Rover." Best friend to Marrow and only able to say the word 'destroy' with varying degrees of emotion. To get the information to stop the Bad End Rover gets into a fight with five evil Sentinels. Buying time for Professor X and the others to get the information needed and escape. He's being destroyed by a bunch of tiny wolf-like sentinels, his last word is to his friend Marrow, "Run."
 * Justice League:
 * Batman attempts this in the Season 2 Grand Finale. To prevent the Thanagarian's hyperspace bypass generator from destroying Earth, he sets the Watchtower space station on a collision course with the generator, then insists on staying in the Watchtower to ensure that it doesn't drift off-course. Once Superman learns what Batman is doing, and he flies in to pull Bats out just in time.
 * Metamorpho appears to do this in "Metamorpho" turning himself into a chemical solvent to destroy a rampaging Kaiju-sized monster. He manages to reconstitute himself and survive, soberly saying, "I am never doing that again."
 * In the episode Legends, a few members of the Justice League get transported to a bizarre Golden Age/Silver Age-style alternate universe where various cornball heroes and villains battle over Seaboard City. After The Reveal, the Justice League attempts to fight the true villain, but they lose badly. They're saved by

In Season 2 finale a volcanic eruption is set in place under the city. Terra uses her power to stop, and seal it, but the price for doing so is her turning to stone.
 * Near the end of the fourth season of Winx Club,
 * Chaotic, . Twice. Granted, if you're going to go, the way he did so was incredibly awe-inspiring, and of course he'd be the one brave and heroic enough to do it. But for a show where they Never Say "Die" and Death Is Cheap...not to mention his final moments and the memorial and monument he received...
 * In Monsters vs. Aliens, it's not death, it's something worse. The whole movie is Ginormica just wanting to be plain, normal Susan Murphy again. Then the alien extracts the Phlebotinum from her, making her normal-sized again. In order to save the planet, she
 * Galaxy Rangers loved this Trope. At least four examples in the series, starting with Eliza, who ordered the ship with her kids to blast off, leaving her to a Fate Worse Than Death.
 * Played for Laughs and Subverted in Madagascar Escape 2 Africa, when Melman the giraffe thought he was dying when the other giraffes saw brown spots all over his body. He allows himself to be sacrificed to a volcano to bring water back to the reserve. Thank You, Julian. Gloria manages to save him. Afterwards, Mort arrives with the shark still chasing him. The shark misses and falls into the volcano. The shark's fate is a villainous sacrifice.
 * The Vizier from Shadow Raiders gets a good one.
 * In The Brave Little Toaster,  Respectively by
 * also did this in the sequel by, and seeing as how  , it counts double. Considering that  , it was the least he could do.
 * of The Secret Saturdays jumps in front of an energy beam intended for Drew. It was the first (and sadly last) truely heroic thing he ever did.
 * from Justice League Unlimited in the episode Divided We Fall. It's the league's Darkest Hour, and the founding members are down.
 * from Sym-Bionic Titan pulled one of these in order to save Lance.
 * Suprising, Regular Show has had some truly heroic ones. In "Benson Begone", A second one happens in "Go Viral" where
 * In The Simpsons, it's revealed that went into a nuclear reactor core unprotected and turned it off, in the process giving his life to save Springfield, everybody at the plant and . One of the few times Mr Burns shows any respect for any character in the series.
 * Teen Titans character Terra does this. Her power is manipulation with the earth (hence her name).
 * From Harley Quinn;