What An Idiot / Dragon Ball

Much of the drama in the anime and manga of Dragon Ball comes from the characters constantly making bad decisions, being clueless about their own idiocy and then being punished for it.

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    General 
  • We note that this one is exclusive to anime filler, non-canon movies, and Dragon Ball GT, as it is notably averted in the manga canon. Powerful warriors both good and evil come through the pike in the Other World once they're destroyed.
    You'd expect: Yemma-Daio and his people to dispose of the warriors' bodies before sending their spirits to their "final" destination unless keeping any of them around is absolutely necessary. (This is precisely the case in the manga, Resurrection ‘F’, and Dragon Ball Super.) At the very least, make sure only the good guys get to keep their corporeal forms.
    Instead: Everyone with a modicum of relevant power is later seen still with a body. Including the bad guys sent to Hell.
    You'd then expect: Some powerful dead face to stand guard in Hell making sure that any chaos doesn't last. Either make it one warrior who's generally antisocial or doesn't mind making the sacrifice, or a cycle of guys that get shifted in and out for one another (with Goku and Paikuhan being obvious players).
    Instead: Goz and Mez seem to be the only thing keeping the bad guys in line over there, up until GT where Piccolo dies permanently and, after a complicated gambit to get Goku out of Hell, does exactly that.
    The result: All it takes is for two evil scientists to get together and create an android, or for one Saike Oni to completely lose track of the soul cleansing chamber while listening to his music, and literally, all hell breaks loose. The Piccolo solution above is devised only after the Z-Fighters are mostly done cleaning up the GT outbreak, and he wouldn't be there to do it if he hadn't sacrificed himself to get rid of a different problem earlier.
  • There have been many, many occasions when Krillin has been watching his friends be knocked around by an opponent. Nappa, Vegeta, Recoome, Freeza, the Androids and Cell all instantly come to mind. During all of those fights he had access to both the blinding Taiyoken technique and the cut-anything Kienzan technique. It's also well-documented that his ki control and awareness relative to the power he actually has is among the best in the series, or at least the best among the human fighters.
    You'd expect: Krillin would take the opportunity his friends are providing by being knocked around to sneak up, use the Taiyoken technique and then cut them in half with the Kienzan. Even if the opponent in question can regenerate or is powerful/fast/skilled enough to recover from the Taiyoken and dodge or deflect the Kienzan, or otherwise somehow dilute the effect of either technique, it's a weapon the opponent has to take seriously enough to leave an opening for his more powerful allies to gain the upper hand.
    Instead: Krillin often just stands there and watches, not even bothering to intervene on one on one battles when he has no reason to not gang up on the enemy. During their fights with the Androids he doesn't even bother to fight. Even when he does use one technique, he doesn't think to use the other, which usually results in the Kienzan being dodged rather easily or the Taiyoken being utterly wasted on just escaping the enemy's pursuit. In fact, Cell makes much more fruitful use of the Taiyoken at one point than Krillin ever does (for more on that, see below).
  • Goku has access to the Instant Transmission/Instantaneous Movement technique. It allows for Teleport Spam during a battle, and failing that, allows for immediate withdrawal from a hostile situation providing you can find another ki location to lock onto. Seeing how friendly ki locations are all over Earth and on other worlds, this is not a problem. Also, you can teleport anyone and anything that is currently touching you or you are currently touching. Modern armies would be green with envy.
    You'd expect: For Goku to teach this technique to everyone. Even if the technique is useless because the opponent is too strong for direct combat, then it could be used in a support role (fetching Senzu beans, getting Dende to heal combatants), for simple evacuation procedures (moving injured fighters), or other purposes (fetching Earth or Namekian Dragon Balls, teleporting allies to the battle). Even if it takes considerable time to learn, they have access to several magical wish-granting dragons as well as a Hyperbolic Chamber of Spirit and Time and thus can easily address that concern.
    Instead: Goku doesn't teach anyone the technique that could save many of his friends or make any battle a whole lot easier. In fact, no one even thinks to ask Goku to teach them the technique.

    Dragon Ball Z 

Saiyan Saga

  • In the Saiyan saga Goku splits a magic bean in two parts, so that Gohan and Kuririn can both have their part. They are fully recovered, even despite eating just half a bean.
    You'd expect: That from that point on they'd actually split any magic bean into two so that they have double the limited supplies of magic beans without having any drawbacks.
    Instead: No one splits a magic bean ever again…

Freeza Saga

  • According to Word of God, Krillin's Kienzan technique is capable of cutting through anything. Now, let's look at a certain point in the battle with the Ginyu Force: Recoome is about to use his Recoome Eraser Gun on Vegeta, while Krillin moves up for a sneak attack on him.
    You'd expect Krillin to bust out a surprise-attack Kienzan, slicing Recoome in half while he was busy with the attack and eliminating yet another member of the Ginyu Force, as well as making some headway toward not being regarded as a joke by the fans.
    Instead: Krillin slams Recoome's mouth closed mid-beam, accomplishing little more than knocking out his teeth and severely annoying him.
  • While the gang is trying to survive Freeza, Goku is currently undergoing a healing treatment on his ship, but the rate of recovery is going very slowly. Krillin and Gohan have just discovered Dende's healing ability after he saves them both from otherwise fatal wounds.
    You'd expect: Gohan and/or Krillin try to sneak Dende away to where Goku is so Dende can heal him instantly as well and he can join the battle while Freeza is either distracted by Vegeta or Piccolo or focusing on transforming into one of his more powerful forms, or even just let Dende head to Goku on his own since Freeza doesn't know about Dende's healing power and considers him "small fry".
    Instead: Nobody thinks of doing this. Freeza eventually finds out about Dende's healing ability and quickly kills him to keep him from healing anyone else, and by the time Goku has finally recovered Vegeta is near death and the others are exhausted and worn out.
  • When Goku is charging the spirit bomb to try and kill Freeza, Freeza catches him doing it, but to Freeza, it just looks like Goku is standing there with his hands raised.
    You'd expect: Freeza would either look up (you know, the direction Goku's hands are pointing) or immediately attack him while his guard is down.
    Instead: Freeza stands there for a good few minutes trying to figure out what Goku's doing, never thinking to look up. By the time Freeza decides to just attack Goku, the spirit bomb is close to being finished; it's even closer by the time he actually looks up; and, after Piccolo steps in to distract Freeza, Goku is able to finish it.

Android/Cell Saga

  • The Z Warriors are fighting Androids 19 and 20. Bulma is however upset about not being involved in the action like before.
    You'd expect: She'd invest in long range surveillance equipment so she can see the battle from a safe distance, especially since she has a baby now.
    Instead: She flies right into the battle, giving 20 the distraction needed to escape and activate the androids that Trunks did know about.
    What's worse: Vegeta destroyed 19 with his Super Saiyan form and Piccolo had 20 ready for the kill when Trunks comes back from the future and tries to explain that 19 and 20 aren't the androids he warned them about. If Bulma didn't show up, 20 would likely have been killed before he could reach his lab, the other androids might've been tracked down and destroyed, preventing Cell from transforming at all.
    Speaking of which: That long range surveillance equipment idea? Dr. Gero's use of that in the form of mechanical bees to collect analysis data that he could account for in creating the androids as well as cell samples that his computer used for Cell's LEGO Genetics. This is the very idea that Bulma's Evil Counterpart invested in to drive the plot of an entire saga, yet she couldn't even do it to watch the action safely from a distance.
    What makes that even worse is that Bulma had once built a camera drone to track Goku's progress in his fight against the Red Ribbon Army. After the drone was shot down at Red Ribbon HQ, she never revisited the idea once.
  • The most extreme turning point of the saga was only ever possible due to a massive avalanche of dumbassery on the part of damn near everyone involved.
    • Cell interrupts Android 17 and Piccolo's much-lauded even battle, which Androids 16 and 18 are watching in the background, and makes it perfectly clear that he wants to absorb 17 and 18 to achieve his perfect form. When Cell nearly kills Piccolo and utterly curbstomps 17, 16 steps in and stops Cell before he can absorb 17, then proceeds to more than hold his own against the bio-android.
      You'd Expect: For the Twins to immediately take the opportunity to RUN FOR THEIR LIVES.
      Instead: They stand and watch.
      What's worse: After 16 fires his Hell's Flash blasters on Cell, 17 ignores 16's warnings that Cell isn't dead yet and comes back into the battlefield area gloating about how the three of them can use the world as a playground. Cue 17 being absorbed and 16 rendered nearly nonoperational by Semi-Perfect Cell.
    • Follow that up with a series of events which involves Tienshinhan putting his own life on the line with a furious assault of Neo Kikoho attacks to keep Cell back, and Cell destroying an entire fleet of islands because he can't find 18.
      You'd Expect: 18 to take these opportunities and get AS FAR AWAY AS SHE POSSIBLY CAN, even if she has to abandon 16 to do so—in which case she should trust that Cell can't sense him either and wouldn't care to even target him.
      Instead: She only gets as far as hiding on one of the islands with 16. Only by fortune is her island the last one left that he doesn't destroy.
    • Meanwhile, Goku is up on the Lookout with Gohan, and both are able to sense everything that is going on, yet Goku knows that neither of them has gained the strength to take on Cell and survive.
      You'd Expect: For Goku to use the Instant Transmission technique to get his allies off of the island before their lives are on the line, and grab 18 while he's at it so Cell can't absorb her.
      Instead: Goku sits on his butt, doing nothing but making horrified expressions and explaining to Gohan that there's nothing they can do, hits Gohan to stop him from going to help Piccolo, only rescues his allies when they're both on the brink of death, and doesn't even think to grab 18.
    • Krillin arrives on the battlefield near 16 and 18's hiding place with an emergency suspension controller created by Bulma to shut off the cyborg twins so that they can be destroyed easily. By this point he's most likely sensed Cell's increasing power and figured out that Cell got 17. Despite his growing crush on Android 18 and his having discerned that the twins aren't evil incarnate, he knows that he probably has to do this in order to make sure Cell can't absorb 18 and become a full-on intergalactic menace. Also worth noting is that at this point Vegeta has arrived on the battlefield an Ascended Super Saiyan and is laying a physical and verbal smack-down on Semi-Perfect Cell.
      You'd Expect: Well, first off, for 18 to have FINALLY MADE A BREAK FOR IT BY NOW so that she wouldn't even BE THERE for Krillin to find. Barring that, for Krillin to be able to get a grip, immediately go to 18, convince her to leave and then lead her the hell away from the place, tell her about the suspension controller and make sure to keep it just in case his best efforts to save her fail and he has to use it anyway.
      Instead: 18 is STILL hiding practically right underneath Cell, gawking at everything as it goes on, even amidst 16's own warnings to run away and forget about him. As for Krillin, he spends a good 10-plus minutes lollygagging about his crush on her, makes the decision to destroy the controller, THEN comes over and tells her to run. It is at this point that Cell finally spots 18.
    • The crowning achievement of stupidity, however, has to go to Vegeta, who, again, while effortlessly curb-stomping Semi-Perfect Cell, acknowledges Cell's last transformation.
      You'd expect: That he would also acknowledge his son Trunks' warnings, considering that he knows a great deal about Cell, and annihilate the evil android while he still had the chance and prevent the destruction of the world as well as thousands of lives.
      Instead: Vegeta, despite seeing immediately that Cell's appeal to his massive overconfidence and lust for battle is a pathetically blatant ploy, inevitably gives in and agrees to allow Cell to attain his perfect form, which allows Cell the time to even spot 18 in the first place, then attacks his own son Trunks to get him out of the way, thinking only about getting a decent fight from the whole deal.
    • Even Future Trunks isn't immune, despite being the Only Sane Man in the situation. While keeping Cell away from Android 18, he knocks Cell down and far away on a couple of occasions, making it clear he is Cell's physical superior and could finish him off just as easily as Vegeta.
      You'd expect: Him to immediately strike and kill 18 when he has the chance, not only because of his own deep-seated issues with the Twins, but as a pragmatic measure to ensure that Cell can't absorb her and is thus destined to become Super Saiyan chow. Like with Tien above, she could even be the one to suggest it if we're worried about making Trunks look too heelish. By this point she's already threatened to blow herself up, so it wouldn't be unreasonable. Barring that, you'd expect him to just kill Cell while he's punching the shit out of him.
      Instead: He's caught up in defending her like she's an ordinary innocent victim and not the Living Battery Cell needs to go One-Winged Angel, as well as protecting Vegeta's pride by not letting him think he's stronger than him. So not only does he hold back too much power when fighting Cell, he finds himself within striking distance of 18 at least once yet only thinks to shout at her and tell her to run. And again, she still does absolutely nothing conducive to helping her own escape.
      Furthermore: Any of the worries from either solution are easily alleviated with only a little extra forethought or knowledge.
      First off, 
      Also, 
    • The result of all this (plus a Solar Flare): Cell absorbs Android 18, transforms into his Perfect Form, and proceeds to kick the crap out of Vegeta, Trunks, Krillin, and Android 16 while treating them all as a warmup, now capable of threatening the entire solar system with his power. Nice Job Breaking It, Heroes!!
  • The Full-Power Super Saiyan means that by remaining transformed as a SSJ for extended periods of time the users can control their energy consumption much better than any other form of SSJ, thus they become stronger in training than any other form of SSJ would make them. While the FPSSJ users Goku and Gohan exit the training room in this state Vegeta and Trunks notice how genius this kind of training is, Vegeta even comments about this.
    You'd expect: That during their second year-long-training Trunks and Vegeta entered they'd be SSJ all the time, thus not only becoming FPSSJ but they'd be if not stronger at least equally strong as Gohan and Goku.
    Instead: Vegeta and Trunks completely forget about the benefits of training as a SSJ all the time, thus even though they trained double the time Goku and Gohan did, they were far weaker.
  • Having seen Gohan's latent power, Goku decides that his own son will succeed him in defeating Cell.
    You'd Expect: That he tells the other Z-Fighters about his own plans and try to give convincing arguments as to why he has to do so.
    Instead: He did not bother telling anyone of this plan, causing most of his friends especially Piccolo to think that Goku did not really care about his son. Without Cell's own idiotic moment, Goku's idiotic actions would have directly caused the end of the world.
  • When Goku wants Gohan to take his place in fighting against Cell as part of the aforementioned plan. He thinks of giving Cell a Senzu Bean to insure that the fight will be "fair" because he didn't want Gohan to win without it feeling like a real victory.
    You'd Expect: For Goku to realize that fair fights do not matter in situations when an Omnicidal Maniac is trying to destroy the universe, and let Gohan fight Cell at his weakest instead, or better yet, Goku decides to fight Cell himself.
    Instead: He foolishly gives Cell a senzu bean!!! Really Goku, who really cares about being fair in situations like this??
  • Right before this, during Goku's fight with Cell he's managed to get the android to use up a good bit of energy. Now that he's weakened, Trunks suggests that all of the Z Soldiers attack Cell - as strong as he is, not even he can match all of them fighting against him at their peak while he's lost much of his strength.
    You'd Expect: That everyone listen to Trunks! Remember, if Cell decides nobody can defeat him he's going to blow up the planet and kill everyone!
    Instead: Vegeta calls Trunks an idiot and berates him for daring to choose a "cowardly" option, and the other Z Soldiers all silently agree with him that they shouldn't do a joint attack. It kind of makes you wonder how it somehow took all the way until the Buu saga before a villain was successfully able to destroy the Earth considering the standards the Z Soldiers operate by.
  • When Goku decides to have Gohan fight Cell himself, he declares to Cell that he will have an opponent even stronger than Goku himself if he builds up Gohan's rage long enough.
    You'd Expect: Knowing full well that he did the same trick on Vegeta and is going to have the same outcome, he instead kills (or at least threatens to) Gohan and demands that Goku eats his Senzu Bean and have a rematch, knowing that he already has an even fight with the Saiyan.
    Instead: He accepts Goku's offer and makes Gohan angry to the point of turning SSJ2. No surprise that Cell ends up being stomped by the angry child.
    What's worse: This is the entire plan that Goku's string of earlier idiotic actions was leading to all along. Meaning not only was Cell Out-Gambitted by Goku, said gambit was predicated on daring Cell to be an even bigger idiot than him and Cell took the bait.
  • Near the end of the Cell games, Gohan had the chance to finish him off. Cell was badly wounded and couldn't regenerate, which would mean another attack would be enough to actually finish him off for good. Goku urgently yells at his son to do so now, as if the battle gets too drawn out Cell could grow desperate and try something really nasty.
    You'd expect: For Gohan to listen to his father and finish things immediately. Plus, it's not like he and his father haven't dealt with something like that before, as was the case with Freeza when he started growing desperate during his fight with Super Saiyan Goku, which of course led to Namek's destruction. Goku is actually speaking from firsthand experience.
    Instead: Gohan smugly feels Cell's suffering needs to go on and flat out ignores Goku's warnings, allowing him to restore his body. Eventually during the battle Cell is reduced to his Semi-Perfect Form, and Gohan still doesn't pounce on the chance to finish him off—which is what causes and allows Cell to he decides to self-destruct, taking the whole planet with him as one last act of spite.
    Also: Seeing that Cell was knocked back into his Semi-Perfect form, Goku, Vegeta, and Trunks could've just jumped into the fight and killed Cell themselves. Goku could even have grabbed Cell once he powered down, teleported him to King Kai's planet, killed the monster in Other World, and teleported back to Earth. Oh, and speaking of King Kai's planet…
  • While Cell is triggering and charging up the bomb in his body, Goku decides to use instant transmission to teleport Cell away from the planet. Goku can only teleport where there are auras he's familiar with, but luckily that means King Kai's planet, where only three people live.
    You'd Expect: Goku immediately grabs Cell and brings him there, grabbing King Kai, Gregory and Bubbles right after that and taking everyone but Cell on Earth, having a very angry King Kai but saving the day.
    Instead: He waits until the last possible second, and then doesn't even try to escape the blast, spending his last seconds trying to apologize to King Kai. Come Dragon Ball Super and King Kai never lets Goku hear the end of it.

Majin Buu Saga

  • During the 25th Tenkaichi Budokai, Videl is getting badly beaten by Spopovitch. Gohan rushes to warn her to give up and that she isn't able to defeat Spopovitch.
    You'd Expect: Videl to take Gohan's advice and save herself from possibly dying.
    Instead: Videl continues to fight Spopovitch and he almost kills her by stepping on her skull, attempting to crush it.
    Thankfully: Yamu becomes disgusted of the beatdown and demands that Spopovitch end the match immediately, thus he was only forced to kick her out of the ring.
  • Yamcha is piloting a plane containing Bulma, Chichi, the Ox King, Master Roshi, Videl, Puar, Android 18 and Marron. A powerful shock wave destabilizes the plane and damages the controls, which results in busted engines and a dangerous loss of altitude. Everybody is panicked.
    You'd expect: Yamcha to fly out of the plane and use his strength to stabilize it enough to allow a safe landing.
    Instead: When Bulma screams at him to do something, he responds that he cannot do anything with damaged engines and braces himself for the impact... somehow forgetting that he can fly and is strong enough to land the plane safely.
    Thankfully: Android 18 does that and saves the day.
  • Chi-Chi is at Kami's lookout and she's struck with grief because of Gohan dying (her anger is justified though, because Gohan is her child and she only feels like how any decent mother would). She wants to give Super Buu a piece of her mind.
    You'd Expect: For Chi-Chi to listen to the others and not try to tell Super Buu off because she has no chance in even harming him.
    Instead: She walks up to Buu and slaps him in the face for supposedly killing Gohan, then Buu kills her by turning her into an egg. Then again, this is Chi-Chi we're talking about, but even she should know better. It was probably Worth It in her head, though.
  • After Gohan and Gotenks have been absorbed, everyone starts making a big deal about how the only being strong enough to defeat Buu is Vegeto, who comes unfused after being absorbed by Buu.
    You'd Expect: Goku and Vegeta, both of whom had prior experience with Freeza and Cell, to take into account that the fate of the entire universe and the lives of everyone in it, including those of their loved ones, were at stake, re-fuse at first opportunity, and do everything in their power to defeat Buu.
    Instead: Vegeta crushes his earring, because defeating Buu using the fusion would hurt his pride.
    Then: Given another set of Potarra earrings, Goku immediately crushes his because he regards it as "cheating"mere episodes after calling Vegeta out for doing the exact same thing!
  • In the episode "Deadly Vision," Goku and Vegeta are traveling in Buu's body and arguing. Buu pops up in his own head.
    You'd Expect: For Goku to shut up and try to take on Buu.
    Instead: He deliberately tells Vegeta that he is unable to fuse with him, right in front of Super Buu.
    Then: Vegeta calls out Goku on it and tells him "Nice work, is there anything else you'd like to tell him?"
  • Kid Buu charges up an attack powerful enough to destroy the Earth and then some, causing Goku and Vegeta to flee for their lives. As this happens, Kibito Kai goes to Earth to teleport them to safety.
    You'd Expect: Either one to grab Gohan, Goten, Trunks, and Piccolo, assembling their sons and their strongest backup, knowing that Dende and Mr. Satan would be brought back by the Namekian Dragon Balls. Regardless if he were to grab Dende or not, it wouldn't have done him much good since the Earth will be destroyed anyways, with the Balls.
    Instead: Goku grabs Dende and Mr. Satan. Goku, it's alright to save Dende, but why save the guy who stole the credit that your son deserved of beating Cell!
    What's worse: Goku let his own children DIE so he could save a lying fraud and a boy he barely knew. And Vegeta, who clearly realized this since he got pissed off at Goku later on for it, doesn't even think to tell Kibito Kai the kids and Piccolo are still around.
    But wait, there's more! According to Word of God, Gohan's Mystic Form is the ultimate form of Unlock Potential meaning he is now fighting at 100% of his unlimited power, and he failed to beat Super Buu because he had mental blocks from fighting his own brother and mentor, meaning he could have easily killed Kid Buu. By letting the children die, Gohan doesn't participate in the Final Battle and thus the universe is nearly destroyed by Buu. Way to go, Goku.
    Even More!: Once everybody is brought back to life including Gohan, Goku even suggests bringing in Gohan and the others to fight Kid Buu. They do no such thing and go with the Spirit Bomb plan anyway, and as he gives up his energy it ends up making Gohan and everybody else far too weak from it to try to fight Kid Buu in the process. And when Kid Buu fights back the Spirit Bomb Goku's power is too drained to push it forward, so they use the last wish on New Namek to bring a warrior back to full power so he can push it. Who do they think of? Not Gohan with his Ultimate Power, but Goku.

    GT 
  • One of their visits for the Black Star Dragon Balls has a monster named Zoonama threaten to destroy a village with earthquakes unless they give him a bride.
    You'd Expect: That either Goku, Pan, or Trunks just casually knock him out and either drive him away from the village or interrogate him on why he is attacking them.
    Instead: They apparently decide to have Trunks built up as the bride just so that they can cut the whiskers off with the scissors. Except that nothing stops them from just cutting it off with their Ki blasts.
  • Trapped in hell as a result of the efforts of Gero and Myuu, Goku decides to escape from it and defeat Super 17.
    You'd Expect: For Goku to either turn Super Saiyan 4 and just teleport himself out or have King Yenma request the aid of Fortuneteller Baba to transport him back into the real world since he is not officially dead meaning he can return without any penalties.
    Instead: Piccolo is forced to act dickish in heaven in order to be pointlessly sent to hell for his "crimes" all because of the characters above do not give any thought about doing this.
  • In the Super Android 17 saga, Android 18 steps into Goku's fight against Super 17. Angry over 17 murdering Krillin when his Evil Knockoff had him Brainwashed and Crazy prior to the fusion, she confronts him about becoming a coward, losing his identity and letting mad scientists tell him what to do. Super 17 is visibly shaken at this.
    You'd expect: Dr. Myu to relay orders to Super 17 through the "blueprint telepathy" of sorts seen between them in the fight with the other Z-Fighters just before Super 17 went Gatling Good on Majuub, in order to get him to attack 18.
    Instead: He runs his mouth literally saying much of the same stuff 18 is saying except trying to apply it against her. 17 gets pissed off. End of Myu. Now, from that point…
    You'd expect: 18 to realize he just acted freely of his own volition, whatever the catalyst may have been, and use that opening to try to get the real 17 to overcome the Hell Fighter in his psyche and bring him back to his senses.
    Instead: She's still pissed off and perfectly content to resume the fight without even trying to reason with him any further.
    The result: She ends up losing her brother in addition to her husband, the Z Fighters don't get the chance at a potential ally who could've aided greatly in the Evil Dragon saga, and we miss out on an amazing Call Back to Goku's long-established usual method of making friends.
  • Later when fighting Omega Shenron, Goku and Vegeta managed to successfully fuse together in their Super Saiyan 4 form and is more than enough of making Omega a fool.
    You'd Expect: Knowing which one is the bigger threat, he immediately fires a Big Bang Kamehameha on the Shadow Dragon until he is obliterated and decide on what to do with the aurora sky later.
    Instead: Apparently he thinks that the negative energy sky is more important than the universal-threat dragon and toys with him until he reflects the karma ball. He only decide to become serious after the fusion almost wore off. Thanks to that the only contribution they did is preventing Syn from obtaining the Four Star Dragonball.

    Movies 

Non-canon movies

  • In Dragon Ball Z: Dead Zone, the villain Garlic Jr. has successfully gained Complete Immortality and is now immune to death — a point he spends the first half of the movie demonstrating. Finally, he has the heroes where he wants them and...
    You'd expect: He, knowing how dangerous the Z-Fighters are and that they defeated (at this point in the series) an entire army and Demon King Piccolo, a.k.a. the evil version of Kami, the guy who defeated Garlic's father despite overwhelming odds, kill them immediately.
    Instead: ...he opens up a portal to the titular Dead Zone to send them in. As in the place that is completely unescapable by anyone, immortal or otherwise. No points for guessing who ends up falling in.
    Even Worse: In the anime filler Garlic Jr. Saga, having apparently learned absolutely nothing from his earlier blunder Garlic Jr. does the exact same thing again!
    Also: Since Garlic Jr. is foolish enough to explain to the heroes how he managed to get out of the Dead Zone, he reveals the source of his power and they destroy it in the process, meaning he can't even use the same method to escape again.
  • In Dragon Ball Z: Lord Slug, Piccolo wants to give his powers to Goku while being trapped by a distracted giant Slug in order for him to fight back.
    You'd Expect: For Piccolo to just stretch his arms out to Goku and give him the energy.
    Instead: He apparently force himself into Goku as he struggles to do it. The abridged version even lampshades this idiocy.
    Piccolo: I should probably stretch my arms for this...

Dragon Ball Z: Battle of Gods (and the corresponding Dragon Ball Super arc)

  • King Kai has just been notified telepathically by the Supreme Kais of Lord Beerus' awakening. Knowing as they do that if Son Goku learns of the existence of a powerful god like Beerus he'll naturally want to fight the guy and see what he's got, King Kai tries to keep Beerus a secret from Goku, who is currently training on his planet.
    You'd expect: Him to be careful never to let that name come out of his mouth until Beerus is back to sleep and the trouble has passed.
    Instead: He says the name at least twice, resulting in Goku overhearing him, which forces him to tell the truth.
    You'd then expect: Him to not go into detail about Beerus' strength, but instead casually paint the guy as "nothing you need to worry about, he's an old friend and a fellow god like us Kais, just show him respect and don't make him mad." In fact it might've been better to just do that without even going through the failed attempt to keep Beerus a secret at all. Without the preconceived notion of a super-powerful god, Goku might just be put off enough by Beerus' scrawny visage, Whis' androgynous appearance, and his inability to precisely gauge either of their Ki, and thus perceive them to be just like the Kais, whose divine powers lie in magic rather than combat. If Beerus didn't do anything to Kick the Dog while he was there, Goku most likely wouldn't have stepped up to fight.
    Instead: He tells him all about how Beerus is a destroyer god and actually expects warnings about how "he's the God of Destruction, he's too strong, you don't stand a chance against him, etc." to actually faze Goku.
    The result: When Beerus shows up asking about a Super Saiyan God, Goku spares little time saying "Hey, dude, heard you were strong. Let's fight!" and getting his ass kicked as a result.
  • The backstory with Beerus and King Vegeta with Prince Vegeta watching from the shadows—particularly in Super, where there's more to Beerus' abuse of the King (and his call for Freeza to destroy the Saiyans) than a mere distaste for the King's food. While abusing King Vegeta, Beerus recalls that he asked the King to get him the most comfortable pillow in the universe even if he had to steal or kill for it, and apparently he did just that, but if Beerus didn't assume the next part out of spite then what he did after that point was literally Too Dumb to Live.
    You'd expect: That he gave Beerus the most comfortable pillow, since Beerus had obviously impressed upon the King what a powerful monster the God of Destruction really is otherwise he wouldn't have entertained such a frivolous mission.
    Instead: He hoarded it for himself and gave Beerus the second most comfortable pillow, hoping Beerus wouldn't notice the difference.
    The result: King Vegeta gets humiliated in front of his son, said son tries to force Beerus off only to be paralyzed by the GoD's power, whatever Beerus does to encourage or order Freeza to destroy the Saiyans happens, cue Vegeta-Shattering Kaboom.
  • Thanks to Majin Buu being stingy with pudding and nobody standing a chance against Beerus in the ensuing fight, all that's keeping Beerus from destroying the Earth is the prospect of eating more of Earth's best food. So he decides to play Oolong in a game of rock-paper-scissors for the fate of the Earth. They end up drawing twice with both hitting scissors each time. A long pause of deliberation occurs before the third game.
    You'd expect: That Oolong consider making a different move this time, or at least have a good strategic reason for doing what he does next.
    Instead: He picks scissors for the third time in a row and gets beat by Beerus' choice of rock. The best explanation he can come up with is to pin it on the saying "third time's the charm."

Dragon Ball Z: Resurrection ‘F’ (and the corresponding Dragon Ball Super arc)

  • Freeza gets a lot these moments throughout the film thanks to his overwhelming arrogance.
    • Upon being revived by his men and declaring he plans to take revenge on Goku, Tagoma implores him to give up his vendetta and go back to ruling the empire.
      You'd Expect: Frieza to at least hear him out. His empire has been in decline since his demise, so it wouldn't be unreasonable to re-establish his place as Emperor of the universe.
      Instead: He throws Tagoma out the airlock and carries on with his plans. It ends as well as you would expect. (The Super version mitigates this, having him shoot Tagoma's elbows and knees with the intention of seeing him die in agony only to spare him and keep him on the force when he later recovers.)
    • Frieza, upon hearing that Goku got strong enough to beat Majin Buu (one of the two people his father told him to never challenge), decides to go train for the first time in his life, figuring he could unlock a ton of new power that way. Four months later, Freeza is able to increase the power level of his weakest form well beyond his final form's power level and gains a new form that's stronger than Buu and about as strong as Beerus (the other person he was told to never challenge).
      You'd expect: For Freeza to take one more month or so to get used to his new form and train that form specifically, or better yet, take eight more months and make it a full year of training. If Freeza could become that strong in four months, he'd be unstoppable in a year. Train a few more years, and he'd be the strongest (mortal) being in all existence.
      Instead: Freeza heads straight to Earth after the four months are up. He ends up still being afraid of Beerus and his new form is not properly trained which results in his defeat by Goku and Vegeta due to its drain of his power.
    • Frieza and his men invade Earth and his army is soundly defeated by the Z Fighters.
      You'd Expect: Frieza to spare them as he still needs them to help rebuild his empire.
      Instead: He kills them all out of sheer disgust, thus wiping out the last of his army and having no one to revive him again, inadvertently freeing the universe from his evil.
      Even worse: In Super, where they're not even all defeated yet he thoughtlessly kills them all when powering up to his true form just to show off. Speaking of which…
    • In Super, Frieza is about to power up and transform into his final form even though his troops are still in the vicinity.
      You'd Expect: The troops to get the hell out of there, or alternatively, Sorbet to warn his troops.
      Instead: Neither scenario happens and the troops do nothing as Frieza powers up, the resulting shockwave killing all of them save Sorbet.
    • When his fight with Goku falls out of his favor, Frieza orders Sorbet to shoot Goku in the heart once his guard is down, knocking him out of Super Saiyan God form and putting him at Frieza's mercy.
      You'd Expect: Frieza to just kill Goku while he has the chance and be done with it.
      Instead: Frieza bearhugs the Villain Ball with both hands and tries to convince Vegeta to kill Goku, promising him a high rank in his army.
      Result: Predictably, Vegeta refuses, saves Goku, and beats the crap out of Frieza. And when Frieza tries to get the last laugh by destroying Earth, Whis rewinds time to give Goku a chance to finish him off for good. note 
  • On the heroes' side, Goku manages to regain the upper hand in his fight with Frieza due to his stamina diminishing from using his Golden form and he has Frieza at his mercy.
    You'd Expect: Goku to simply finish Frieza off while he had the chance.
    Instead: Goku hesitates and offers Frieza a chance to leave Earth peacefully again, even promising a rematch.
    Result: Frieza takes advantage of Goku's mercy and orders Sorbet to shoot Goku in the heart. And when Vegeta bails him out and beats up Frieza, Frieza blows up the planet out of sheer spite. Goku was all too lucky Whis can rewind time...

http://tvtropes.org/pmwiki/pmwiki.php/WhatAnIdiot/DragonBall