Redemption Promotion

"It's kind of funny, but I was just thinking that the only time Jessie and James were on the winning side is when they sided with us..."

- Tracey, Pokémon

When a long running series has a Harmless Villain, a villain who can't go two steps without screwing up their whole plans and being completely humiliated by the heroes, occasionally the character might have a change of heart, be zapped by some strange device, or simply be tired of losing. In any case, he might turn good, or otherwise join the heroes. Upon doing this, a revelation will be made: when fighting for the side of good, suddenly the idiot who couldn't even get a clear cut plan together is taking care of business left and right!

In short, the villain is much more effective as a hero than a villain. In which case one of three things can happen:
 * 1) If Status Quo Is God, then some occurrence will cause the villain to turn evil again, but not before both the hero and the villain gain some new insight into each other.
 * 2) Rarely, the villain will stay good, and throw off his Villain Ball shackles (or keep them, depending on how much comedy factors into things), possibly becoming a Sixth Ranger.
 * 3) The villain will die, be Put On a Bus, or similarly get a bridge dropped on him. Usually either because executives don't think the viewing public will accept the iconically inept villain as a plausible hero, or simply because Redemption Equals Death.

In any case, such storylines always add flair to the characters on the show, because now you know that, even though they continue to say they're evil time and time again, you know that there's a good guy in there somewhere (cue "awwwww..."), much to his/her chagrin, though they probably secretly enjoyed it.

Villains that were already powerful and effective in their villainy will generally get a Redemption Demotion instead.

Curiously this hardly ever overlaps with Token Evil Teammate; if the character commits something evil after their Heel Face Turn, it is usually taken as a sign that maybe heroing wasn't meant for them after all.

Note that this page will often spoil a Heel Face Turn.

Anime and Manga

 * Pokémon's Team Rocket trio is one of the quintessential inept villain teams, but they've often tried to help out the hero on occasions, in which case their skills go way up. This often showcases that being on the side of good is probably the best thing for them, but for some reason they insist on causing trouble anyway.
 * If you look at their pre-anime timeline flashback episodes, Jessie and James are pretty serious. Even when they became goofier/more open toward each other and friendlier toward each other, they were good criminals. Though, soon after they met Ash...they became the "lovable losers" that they are today.
 * Subverted as HELL as of Best Wishes. They are very competent, goal-minded, and NEVER ONCE "blasted off" since then.
 * Grandis, Hanson, and Sanson from the Nadia: The Secret of Blue Water started out as a highly inept Terrible Trio who always lost to Nadia. Yet after making a permanent Heel Face Turn, they're powers and skills proved to be extremely essential. Hanson was able to shine as a Gadgeteer Genius, even smarter then the Kid Hero protagonist in that area, Sanson's super strength saved the gang dozens of times, and Grandis showed herself as a capable leader
 * Viral in Tengen Toppa Gurren Lagann is a quintessential example. Prior to his Heel Face Turn he was a permanent victim of Villain Decay, each vow of new determination to avenge his slain allies or regain his honor only making the next beatdown even more painfully abrupt. But once he  he demonstrates his masterful skill as a brilliant copilot whose sole handicap is his relative lack of Spiral energy. (And even that may be debatable.)
 * Jeremiah in Code Geass became more competent after his Heel Face Turn. Of course, being upgraded to a bulletproof cyborg helped...
 * Possibly because the words "Zero" and "Orange" stop being a Berserk Button for him, and the revelation that Lelouch and Nunnally are alive gave him a chance to shed his Failure Knight status.
 * Before his conversion he was a broken man. Afterwards he had everything to fight for ... and was unexpectedly popular.
 * Same goes to his sort-of "succesor",  from Gundam 00.
 * Justified in Mahou Sensei Negima with Evangeline. She starts out powerful enough to cause Negi and Asuna trouble. Turns out she wasn't fighting too hard. All her later appearances she's just generally more powerful than she was before, beating down every hero the series has and one arc pulling a Big Damn Heroes and destroying a Demon God (nearly) single handedly. The reason is that the Thousand Master tricked her and weakened her with a spell, only when the spell is temporarly taken away does she have her full power, that made her one of the most feared mages.
 * Shuten Doji/Anubis from Ronin Warriors, who becomes even more powerful after breaking free from Talpa's mind control.
 * Fate Testarossa of Magical Girl Lyrical Nanoha got stronger after her Heel Face Turn (getting proper training from Chrono in-between seasons helped). Same with Signum and Vita in the third season. Also played straight in StrikerS; when is brainwashed, she cannot use anything but her Inherent Skills.
 * It's suggested in the manga that the Wolkenritter were holding back while fighting the heroes (possibly in order to not kill them), as each one has at least one ability they do not display until the final battle.
 * The one who had the biggest promotion so far would be Nove, who went from a villain who lost all of her battles in Nanoha Striker S, to a hero who achieved the fastest befriending in the franchise in Nanoha Vivid.
 * Yusuke comments on this fact in Yu Yu Hakusho, talking about how Hiei is doing a lot better fighting for him than when he used to fight against him.
 * The key difference is that the victory-or-death scenarios he faces with Yusuke force him to do desperate things to reinvent himself. He gains massive power by mastering the Dragon of the Darkness Flame, which most demons would never even attempt, because it's just as likely to kill them as their opponents.
 * Several of Team Urameshi's old opponents from the Dark Tournament (Chu, Rinku, Jin, Toya, Suzuki, Shishiwakamaru) ally with Kurama and undergo Training From Hell, becoming almost as powerful as Kurama himself.
 * Beelzebumon from Digimon Tamers. A pseudo-Deal With the Devil let him go from a non-threat to a Knight of Cerebus in a single jump, only to be taken down hard once he crossed the line by . Making amends with the human partners he ran away from boosted him back up to Mega-level, with a Hand Cannon and a spiffy set of wings to boot.
 * "I've never felt this kind of power before...!"

Comic Books

 * Kind of the whole point behind Spawn comics.

Fan Fic

 * This is pretty much the basis for the recommended fanfic The Shocker: Legit.
 * Nightmare Moon went down relatively easily. In Magical Pony Lyrical Twilight Luna casually wipes out armies and is considered to be scarier than her Super-Powered Evil Side by the ponies that beat Nightmare Moon. The sheer power at Luna's disposal is enough to freak out her allies.

Film

 * Green Goblin in Spiderman 3

Live Action TV

 * Played straight in Heroes with Bennet, aka HRG. After his Heel Face Turn he STILL keeps a serious amount of competency and shrewdness.   The only noted exception being with the activities of his teenage daughter but to his defense is there ANY TV dad who is competent in that regard?
 * Sheriff Roscoe from Dukes of Hazzard would occasionally show more cleverness than usual when he was striving for a noble goal, such as tricking Enos into a prison cell in order to stop him from doing something that would get him fired. It's even mentioned several times in the series that he used to be the best sheriff in the county, before he started working for Boss Hogg and became the bumbler that he is.
 * Klingons on the side of the Federation (during the Star Trek the Next Generation era)? Kick-ass combatants who might be a bit brutal but not someone to trifle with, with high military competence and strategic and tactical skills. Klingons facing the Federation? Idiotic twits who have the tactical sophistication of a bull in a china shop.

Professional Wrestling

 * Happens a lot in Professional Wrestling. Standard booking is that the faces have to win matches cleanly and only lose due to cheating in order to keep the fans support and sympathy while heels almost never win cleanly so that the fans want to see them get beaten. Mix the two with a Heel Face Turn and you have this.
 * Christian Cage is probably the ultimate example of this trope. After turning his back on the fans he simply got more and more pathetic, and boring to the point in 2003 it seemed like he couldn't win a match clean if his life depended on it, even against 150 pound Spike Dudley. After returning to ECW many new fans were shocked to see he could actually escape from an arm bar and with the crowds behind him tag teams have to cheat to beat Christian in two on one matches.
 * As a face, Edge (Christian's Kayfabe brother) did some pretty impressive stuff, including facing Kane with a broken arm and winning. As a heel, his gimmick is that he's a sneaky cowardly bastard who wins most of his matches by being "the ultimate opportunist".
 * Alex Riley may be the best example of this trope. As The Miz's apprentice, he was of little competence except when he needed to take a beating in lieu of his teacher. Once Miz lost the title, he began to berate his protege until he lost one rematch too many and he fired Riley in the ring. Riley would turn on his former leader and immediately gain new found in-ring competence as he would defeat Miz several times and find himself in almost immediate title contention despite being portrayed as a mere rookie months earlier on NXT.
 * Sheamus is another fine example. He had been suffering from severe Badass Decay for months and was Demoted to Extra. The Mark Henry goes on the warpath, destroying everything in his path to the point everyone was afraid to face him. Sheamus steps up to the plate to challenge him fearless, performing a Heel Face Turn in the process. Cue Sheamus being the first one to defeat the Great Khali in recent months by forcing his way out of the Khali Vicegrip with sheer brute strength!

Video Games

 * In Metal Gear Solid, Johnny Sasaki was a Punch Clock Villain, ineffective and nearly too dumb to live. By MGS4, he has switched side because of the Power of Love, but is still ineffective... until mid game, where he begins to take several level of Badass. By the end of the saga, the Butt Monkey Punch Clock Villain has become a super sexy Big Damn Hero Badass Normal who get the girl and the happy ending.
 * To be fair, part of the reason Johnny often appears so disastrously inept is because he's an everyman amidst supermen. It's explained in the latter part of MGS4 that he  Johnny isn't the brightest crayon in the box, but he's not completely incompetent.
 * This happens with Bowser in a few games. Usually, this is because the player can control him so he doesn't get tricked into stuff like jumping to let enemies pass, smashing through the floor into a bottomless pit, charging at an enemy known for jumping ability that would let him grab his tail and throw him into a bomb, etc.
 * And nowhere is this more true than in Bowser's Inside Story. Though he often gets power boosts from Mario and Luigi inside his body, the game ends with him not only punching out a manifestation of pure evil, he completely outclasses it in punching, breathing fire, rolling around as a spiked ball, throwing minions, and inhaling. The Bros.' only role in the fight is stopping its Healing Factor (which, granted, is a boss fight of its own).
 * In Super Robot Wars Original Generations 2 bad guy Arado had stats worse than your average mook when he fights you, but instantly becomes much more capable after he joins you. This is especially notable because he goes through a lot of training, and figuring out what skills his best at.
 * In Paper Mario the Thousand Year Door. When Vivian joins your party, she is actually stronger than she was in the fight against her and the other Shadow Sirens much earlier in the game. In fact, if you fully upgrade her stats, she will be equal in strength to her ex-fellow siren Beldam during the rematch at the end of the game.
 * She doesn't play it completely straight, though. When she turns, she has to relearn her Fiery Jinx spell by leveling up - though when she does relearn it, it's still several times stronger.
 * Possibly justified in that she was unhappy working with her sisters, and thus never fought at full strength along with her sisters because she didn't have any emotion behind it. When she joins Mario, she feels relived and is able to work better now that she has a reason.
 * In Half Life, where the Vortigaunts are enemies, they're low-to-mid-range opponents who aren't too much to worry about. By Half-Life 2, where they're on your side, they're more powerful combatants and have also gained almost mystical healing and mechanical abilities. This may have something to do with the slave collars they were wearing as enemies, however.
 * By Half-Life 2: Episode 1, Vortigaunts are shown to be powerful enough to  and by Episode 2 they're , so their Heel Face Turn has potentially upgraded them from cannon fodder to something that, collectively, potentially approaches King of All Cosmos.
 * By way of explanation, the Vorts' more godlike powers are fueled by an extract which they procure from antlions. Presumably, their former masters took no interest in their animal husbandry.
 * Not exactly "evil" so much as doing his job, in Phoenix Wright Ace Attorney: Justice For All when Detective Gumshoe and helps Phoenix briefly, he shows shades of significant competence.
 * In the remake of the original Wild ARMs, Zed, the Harmless Villain so lame he couldn't even make it into the Quirky Miniboss Squad, is a recruitable secret bonus character who's actually a pretty good fighter once he's on your side. Lampshaded by dialogue indicating he finally has something worth fighting for (the little blind girl he ended up adopting) rather than simply just fighting to prove himself.
 * Subverted in Mega Man 7. Bass was one of Mega Man's most intimidating foes in the first game he appeared in and had two Best Boss Ever fights. He also matches Mega Man's strength in the secret two-player mode. However, it's played completely straight in all later games when he became a a weak robot who just had to battle Mega Man despite him having zero chances of defeating him in Mega Man 8 as opposed to being a very impressive and powerful robot who is successful at what he does in the games where he is fighting against evil rather than Mega Man. In Mega Man and Bass, Bass underwent his heaviest Divergent Character Evolution and arguably became a Game Breaker.
 * In Star Wars Battlefront, whatever faction you are using, the player is a lot smarter than the AI. So you could be fighting against utterly ineffective clone troopers one battle, then the next be using a hyper-competent one.
 * Though inverted at the same time, since the AI is a little smarter for your enemies than your allies...
 * In Fire Emblem pretty much any enemy joins you exactly as they were... meaning you can level them and make them far more powerful than they were before, tearing through legions of their companions.
 * Odie in Soul Nomad. When hes a Heel, hes no more than a dimwitted, incompetent bandit mage Goldfish Poop Gang. When he switches sides, he still has the same stats he had as a boss, making him a very strong mage, and is no longer subject to the idiotic Ai and squad formations. Oddly hes still treated as a loser by everyone for most of the game, but has a flash of competency near the end. In the, events force him to stop screwing around and work for good, where he actually shows himself as a very competent mage, even impressing his Aloof Big Brother.
 * In Pokémon Black and White, although not villains, the gym leader are at least boss battles, and when they come to help you at the end as you go up to beat N, this is in full effect. The gym leaders are capable of beating up six of the Seven Sages while you go to deal with N/Ghetsis, despite the fact that most of them shouldn't be able to beat the wild Pokémon hanging around outside.
 * A Fanon justification is that they have several sets of Pokémon that are level-scaled to the challengers, and bring out heavy-duty sets for the Seven Sages fight. Hence why veteran trainer Ash, whose Pikachu alone should be able to curbstomp every damn thing by the latest anime season and regularly turns the Elemental Rock-Paper-Scissors into a pretzel, struggles against gym leaders who have Pokémon weaker than level 20 in the games. This also neatly explains the roughly ten-level drop in difficulty of the Indigo/Johto Elite Four between Pokémon Red and Blue and Pokémon Gold and Silver, although not why they don't summarily flatten the criminal gangs' attacks on their towns before the player gets there.

Webcomics

 * Subverted in Abe Kroenen, in which Rasputin turns out to be just as horribly inept at being a good guy as he is at being a bad one.
 * Happens in Kid Radd. The vilians go from being humerously incompetent to downright deadly once they switch sides.
 * Shadowgirls got a borderline case-- behaving like a spoiled brat didn't won verbal confrontations and in physical ones faced only the opponents either weak enough or strong enough to make it one-sided. Once she did decide to bring misery upon those who deserved it, she gets to butcher a Bad Guy too powerful to expect this and uses her Mad Bitchy Skillz for a truly jaw dropping show.

Western Animation

 * Jack Spicer of Xiaolin Showdown has turned good on three occasions, and each time he's been way more competent (though one time he was so nice that he made everyone sick), and has teamed up with the heroes many more times. The only reason he's hasn't made that Heel Face Turn is because he's too much of a Card-Carrying Villain to give up the villain schtick, and he's apparently too much of a quitter to want to work hard at being good.
 * Kim Possible, in the episode when Dr. Draken becomes good, and Ron becomes evil. The goofy sidekick is actually quite intimidating as an evil villain, while the Harmless Villain seems a pretty decent good guy.
 * Drakken was also pretty damn competent at running a company when he acquired the cupcake business. Shame about the low-carb craze.
 * Also in the series finale (of the Post Script Season- that is, the real finale), Drakken, famous for his terrible plans to rule the world, comes up with a successful one to stop someone else from doing the same.
 * That wasn't the first time Drakken got a sudden competence boost when opposing other villains.
 * Jackie Chan Adventures had an example of the permanent switch in Tohru, who was already pretty effective before he switched, and then learned magic and upped his success rate.
 * Jackie Chan Adventures also had Finn, Ratso and Chow turn good in one episode, and do extremely well at being good guys... until their greed gets the better of them. In the end, they accidentally make a Heroic Sacrifice which, in a parody of Redemption Equals Death, leaves them stranded on a cliff halfway down a mountain.
 * In Avatar: The Last Airbender, Zuko is arguably more effective when doing good deeds or acting on the behalf of the heroes (initially to serve his own ends), usually under the guise of the Blue Spirit. When he makes a full Heel Face Turn, this is briefly inverted by him losing all his powers, but afterwards he becomes even more powerful by.
 * Although we don't actually see what he used to be like, think about this. OK, well, but still.
 * Breaking out of a Fire Nation Prison...by himself...during an eclipse when he didn't have his Fire Bending! And he's still described as a One-Man Army by the shell shocked warden!
 * Subverted in Powerpuff Girls when Mojo Jojo shows power he never had before when he teams with the Girls to beat down an alien bent on the destruction of Townsville, but this isn't because he found good inside himself, but because the girls said they found something more evil than him.
 * Zim, from Invader Zim. His job is to conquer humanity, but he's actually more successful in defending it.
 * When Carl the Cockroach wizard was allied with Yin and Yang, he was incredibly competent. The siblings even lampshaded it.
 * Occurs at various points in X Men Evolution with the Brotherhood, who tend to be less than intimidating when they're playing antagonists. But whenever they need to team up, they all get a nice promotion- even Toad, the series' resident smart-assed coward, was able to help out against Magneto and an evolved Sabretooth. Their best moment as a team may be the series finale, where they arrive late to cover Kitty Pryde's team after they've been wiped by an upgraded Magneto (mind-controlled by Apocalypse), and manage to hold out own against him without losing a single member (with the other teams fighting Apocalypse's horsemen all suffering some defeats).
 * Proves to be the case for in Megamind.