Off with His Head!: Numerous times. Ahsoka takes out four Death Watch mooks this way. Riff Tamson didn't technically lose his head, but rather it was the only thing left of him after he blew up. The droid Huyang got a non-fatal version, and it was eventually reinstalled. Savage Opress threw his double-bladed saber to decapitate a Black Sun leader. Finally, Darth Maul is fond of it, killing a bunch of people in one swing in "Revenge" and again on Pre Vizsla, with his own darksaber.
Oh Crap: In "The General," a screaming, mechanical thing erupts from the ground right in front of a trooper.
Old Master: Besides Yoda, the season 2 episode "Lightsaber Lost" introduces Tera Sinube, a seemingly-feeble old Jedi who shows considerable wisdom, approaches any problem with a calm, methodical approach to great success, disarms a thief who stole Ahsoka's lightsaber using his own lightsaber which is built into his walking stick, and is supposedly one of the foremost experts on Coruscant's criminal underworld.
On the evil side there's Dooku, who's in his eighties, but still can could beat the younger Anakin, his own failed apprenitce Ventress and the monstrously powerful Savage Opress. And of course Darth Sidious himself, in his seventies, and still the single most powerful individual in the Galaxy.
During Seasons 1 and 2, a character would quip either "I have a bad feeling about this." or "It's a trap!" in every single episode. Sometimes two different characters dropped one of the two each within the same episode! Later it got toned down, but they still popped up from time-to-time.
In the four part D-squad-arc, WAC called Colonel Gascon "a map-reader" once in each episode.
The Jedi in general, but Yoda was explicitly described as such in the first episode of the series, "Ambush," where King Katuunko decreed that Yoda was worth a thousand battle droids.
The nameless Death Watch commando from the beginning of the Mandalorian arc certainly counts, single-handedly attempting to take an entire Republic cruiser out of commission. He does not quite succeed, but kills himself rather than be captured and interrogated, and it is implied he came within a hair's breadth of completing his mission.
Only a Flesh Wound: Captain Rex is the king of this trope. He gets on his feet within less than a day from taking a blaster shot straight to the chest, which leaves a visible burn on his back.
Said word-for-word by a medical droid in "Assasin", after Aurra injured Padmé on the shoulder.
Opening Monologue: Each episode start with a short clip-show and the narrator explaining events leading up to the story of the episode. Overlaps with Previously On, when it recounts the events of an earlier episode of multiparter arcs.
Opening Scroll: Although not used in the show itself, for a while the offical episode guides included a crawling-text version of the episode's Opening Monologue.
Out-of-Character Alert: When Rex uses Anakin's first name when addressing him over a comlink, Anakin realizes that Rex has been taken hostage and has been made part of a trap by Asajj because Rex would never address him by his first name.
Out of Focus: Anakin's screentime in Season 5 has been drastically reduced in comparison with previous seasons. Also Obi-wan to a lesser extent (while Ashoka, on the other hand, got a lot more).
Anyone who gets between Anakin and Ahsoka is going to figure this out the hard way. Unsurprising, considering his previous record. See Berserk Button.
Chairman N. Papanoida is a prime example, being willing to break into Jabba's Palace and gun down waves of outlaws in order to save his missing daughters.
The Pass Word Is Always Swordfish: Rush Clovis used "Padme" as his password to access the plans of the Separatists new droidfactory, because he had a long lasting crush on Padme Amidala. She successfully guessed it just after a few tries.
Mortis is an intersection of the Force, where the Ones lived. When Anakin, Obi-Wan and Ahsoka arrived there, they immediately noted that the Force is exeptionally powerfull. Also, Anakin was able to draw on the planet's power to defeat the Son and the Daughter simultaneously.
According to the manuals Dathomir is also an intersection of the physical and the spirit world.
Plant Aliens: The kindalo from "Mercy Mission" are basically ents, that look like humanoid-skeletons.
Precision F-Strike: In "Rookies", one of the soliders screams "What the hell was that?" This caused many parents to complain and it was removed for later airings.
In the Netflix airing it the clones use the phrase at least 3 times, with Cody questioning Rex's shooting of the clone disguised drone in the head, and one of them shortly after they meet the droid's welcoming comittee.
It's dropped again regarding the fight Ryloth's freedom fighters put up in "Liberty on Ryloth".
Pre-Mortem One-Liner: Inverted and played with in "Bounty". When Ventress killed a man in a bar, the patrons all look at her strangely. When she delivers a one-liner, they all go back to what they were doing.
Previously On: Every episode starts with a newsreel-style recap of previous episodes. Sometimes they reveal the backstory of a new story arc as though it was a previous episode, fitting with the Star Wars aggressive sense of history.
Psychic Strangle: Anakin, Asajj Ventress and Savage Opress all frequently resort to choking their opponents through the Force. Anakin mainly uses it when his Berserk Button (his loved ones being endangered) is pushed, and he also prefers it as an interogation techique. For Ventress, it seems more like a finishing and/or desparation attack. As for Savage, it's more-or-less his Signature Move, 'tho he's fine with the "normal" bare-handed Neck Snap as well. Dooku also used it a couple of times.
After Bo-Katan insulted him, Maul started to strangle her, while he gave a speech to Vizsla and the rest of the Death Watch, about how beneficial an allance between them would be. Later he also started to choke Satine to torture Obi-Wan.
Darth Sidious, upon arriving to Mandalore off-handidly choked two Death Watch commandos, who tried to stop him, while walking past them. Later he strangled an other pair, before entering a room.
Becomes a plot-point in the Season 5 finale, when someone Force-chokes Letta, the woman, who bombed the Jedi Temple to death, while Ahsoka was the only one in her cell. Since the two were alone, and Letta's death was recorded on camera, Ahsoka got framed for the murder, and by extension for masterminding the bombing.
Psycho Strings: The main intrument in Ventress' leitmotif is a sinister sounding violin, emphasizing how dangerous and unpredictable she is.
Invoked by Dooku in "Ambush", when he ordered Ventress to kill Katuunko, as he'd have an easier way "negotiating' with Katuunko's replacement.
King Sanjay Rash of Onderon was so obviously a figure-head, that even the people recognised it, and had little tolerance for him. It was only the droid army stationed in the capital, that kept him in power.
In "Shades of Reason" Prime Minister Almec of Mandalore willingly became the public face for Maul's rule, when the Sith took over Death Watch, and the freshly conquered planet with it.
Puppet State: While not even the Republic Senate has any real influence over the events, Senators and politicians like Padmé and Satine, can sometime cause minor set-backs in the plans of the Sith. The Separatist Parliement on the other hand has absolutely no power, Dooku quite simply ignored their decision to open peacetalks, and had Corruscant bombed. Making it even worse the corporations like the Trading Federation and the Banking Clan are milking both states, while having larger influence on the events than either governments do.
Railing Kill: Plenty of these in "Wookiee Hunt" during the battle on the Trandoshan air fortress. Even their leader, Garnac, falls victim to this when Ahsoka Force pushes him through a door and over a guardrail to his death.
"Bounty Hunters" is The Seven SamuraiIN SPACE, indicated by the memory card at the beginning. Toshiro Mifune, who played one of the samurais in the film, was first intended to play the role of Obi-Wan Kenobi before Alec Guinness was chosen.
Religion of Evil: In addition to the Sith, we have the Frangawl Cult in "The Disappeared" two-parter.
Reptiles Are Abhorrent: The Trandoshans in general, but especially the hunters in "Padawan Lost" and "Wookie Hunt". Terra Sinube is an exception.
La Résistance: The Twi'leks fighting against Separatist occupation in "Liberty On Ryloth". Lucas had all the Twi'leks speak with a French accent to compare them to the French resistance during WWII.
The Onderon freedom fighters from Season 5, whom the Jedi decide to train, on Anakin's advice.
Retcon: Previously established continuity from the Expanded Universe is accepted in general fashion, but many parts have been re-written at the behest of George Lucas to suit the needs of the show, both in the setting of episodes and character/species history. Ironically, the retcons applied by the series itself now supersede the EU in canon after Disney declared the EU to be an Alternate Continuity.
Reused Character Design: Plenty, due to budget limitations. The most frequently used example is a green twi'lek female, who's model appeared completely unaltered on separate occasions, as a bar dancer in two episodes, as a pair of twin dancers at Jabba's palace, in Anakin's visions on Mortis, as a slave girl on Zygerria, and as another slave girl on Zygeria, who committed suicide.
Reverse Grip: Ahsoka's standard lightsaber posture, although there are some times where the switches to a traditional hold during actual combat. In the season two episode "Brain Invaders" she holds her fork in the same fashion when she and Barriss are eating in the messhall.
Rewarded as a Traitor Deserves: Apparently, despite being backed primarily by wealthy merchant conglomerates, the Separatists as a whole are cheap as hell, since their preferred method of payment is a lightsaber through the back. Then again, when you are dealing with a crazy dark Jedi or a crazy cyborg and start making demands, you are really just asking for it.
Taken up a notch in "A Friend In Need". Death Watch has a bunch of harmless battle droids they use for target practice. They beg for mercy and scream "Why?" (albeit in monotone), then beg to be repaired by R2 as they crawl to him for help. It is very satisfying when R2 gives them the chance to get some retribution.
Rite of Passage: Season 5 features the "Gathering" during which Jedi younglings find and harvest their first lightsaber-crystals in the Temple-cavern on Illum. To find their crystals, each must face and come over their flaws and short-comings, such as selfishness, fear, lack of self-confidence, or lack of faith.
Roof Hopping: Done in "Lightsaber Lost" when Ahsoka chases Cassie Cryar, who has her lightsaber, over the rooftops of Coruscant.
Given the circumstances (Merrik was holding a detonator and he was goading them), they may not have seen any alternatives.
The Father in "Overlords" makes Anakin choose whether to save Ahsoka or Obi-Wan. It was actually a test to see if he had what it took to Take a Third Option.
Savage Wolves: The anoobas from the Citadel-trilogy. Osi Sobeck warden of the prison released a whole pack of them, to try to track the rescue party, that broke Master Even Piell out. They proved to be rather formidable, one of them even killed Master Piell, while he was distracted by fighting droids.Bounty Hunter Embo also has one of these creatures - an albino one named Marrok - as a pet.
Scenery Porn: The enviroment and backgrounds are all done in spectacular, nigh-cinematic level, photo-realistic CGI, with so much details, that it takes a number of rewacthing just to register most of it.
In "Supply Lines", the Republic is attempting to feed the entire population of Ryloth. They accomplish this with a single food shipment that could, at best, feed a single village for a few days. This works because the entire planet is apparently populated by only a few dozen individuals.
In "Pursuit of Peace", the Senate debates whether or not to buy five million new clones for the war, which is being fought on numerous planets across an entire galaxy. For reference, the Allies had five million troops on the Western Front in World War II and it was still a close battle.
In "Plan of Dissent" the clones mention that one of the obstacles to taking a capitol is missiles with a "100 megaton yield". We later see some strikes with the weapons that produce standard explosions, affecting an area no more than a couple hundred feet each. For comparison, not even the biggest, most powerful nuclear weapons ever made had a 100 megaton yield, and would cause miles of devastation. While granted those missiles were never identified as the 100-MT ones, why bother mentioning the yields and then showing missiles being fired if they're not going use the same missiles?
For more reference, the most powerful weapon ever detonated by modern earth was the Tsar Bomba, a 50-MT nuclear bomb that shattered windows over two hundred miles away.
In "ARC Troopers", 99 ends up dying in an attempt to get more grenades. While it's certainly heroic that he was willing to try, that hallway was a deathtrap and even a Jedi would have had trouble running that gauntlet. His death ultimately accomplished nothing, though his life certainly mattered.
In "Altar of Morits", The Daughter sacrifices herself to save The Father and ends up breaking the balance of the Force. She has the Force and could have easily used that instead.
In Shadow Warrior, General Tarpals' heroic sacrifice in defeating and capturing Grievous and dying in the process ends up turning into this, because they end up having to give Grievous back to the Separatists in exchange for Anakin Skywalker, who was captured by Dooku shortly after Grievous's capture.
Shapeshifter Guilt Trip: Inverted in "Overlords", where The Son takes the form of Anakin's dead mother, in order to convince him to let go of his guilt and embrace his inner darkness.
She Is Not My Girlfriend: In "Voyage of Temptation", Obi-Wan says this at Anakin in regards to the Mandalorian noblewoman they are trying to rescue.
Captain Rex is going to execute General Krell once he learns of his planned desertion to the Separatists, since he will be able to give them enough information to cripple the Republic war effort. Dogma does it for him.
The Kadavo slave master knows that Jedi don't kill unarmed prisoners, but he fails to consider the presence of Rex.
Nahdar Vebb. He's introduced as the former Jedi apprentice of Kit Fisto, there to help his former master track down Nute Gunray. Over the course of the episode, we see how the war and Separatist atrocities have changed him, made him angry, Grievous' Jedi trophies especially. He get more brutal in his treatment of enemies, using excessive force to scrap battle droids. Insisting he can take Grievous against his master's advice, he boldly attacks the general. Grievous kills him. You were expecting a happy ending?
Mina Bonteri. A truly noble and idealistic Separatist Senator who only sought to escape the corruption of the Republic, she works with her old friend Padme Amidala to convince the Separatist Parliament to pass a bill to open peace negotiations with the Republic. With a Rousing Speech, she wins the confidence of the majority of its members, leading Padme to propose an identical bill in the Galactic Senate. Then Grievous bombs Coruscant at the behest of Dooku, Padme's bill fails to pass, and Mina herself is killed. As the cherry on top, Dooku withdraws the peace offer after blaming the Republic for her murder.
Duchess Satine. She worked passionately for decades to promote the causes of peace and Mandalorian neutrality, even evading Deathwatch assassins on Coruscant itself to stop a Republic intervention on Mandalore. Then said neutrality causes economic havoc when the Republic redirects resources elsewhere, leading to the betrayal of her Prime Minister. Next, a vast army of criminals in secret league with Darth Maul terrorize her populace until the Deathwatch "saves" them. Then Maul and the Deathwatch mosey on in and overthrow her to vast popular acclaim. She is used for bait to draw in her old flame Obi Wan, their escape attempt fails, and she is murdered in front of him. To top it all off, a new civil war breaks out in her capital city. And from the EU, we know that her pacifist ideals completely failed to take and Mandalore went right back to its old warrior ways.
Shoot Your Mate: Darth Sidious orders Count Dooku to kill Asajj Ventress in order to test his loyalty, claiming that refusing to comply would indicate his plan to eventually overthrow Sidious with Ventress's help.
Shock and Awe: Force Lightning of course. Dooku is usualy the one to deliver it, and usualy only before/after he uses his lightsabre skills. The Son, the personification of the Dark Side of the Force can use a red varient. And of course, the one time he fights in the entire series, Darth Sidious uses it with expertise.
Silly Rabbit, Idealism Is for Kids!: General Krell claims that is no longer naive enough to believe in the ways of the Jedi, which is why he is planning to betray the Republic and defect to the Separatists.
Single-Biome Planet: Even more-so than the movies. According to the DVD special features, the ice-world from "Trespass" is supposed to be what Hoth would have been like if George Lucas did not film on location in Real Life. An actual ice-world, there are not even any rocks visible in the episode, although the producers do admit that this raises some questions regarding events in the episode which they advise you not to think about.
Morley, a literal one, found by Savage Opress on the junk planet and who leads victims to Darth Maul's lair where they will be killed and he can eat the remains.
Soft Water: In "Gungan Attack" the gungan army jumped headfirst into the Mon Calamari ocean from the lower dock of a Venator, that was hovering several stories high above the water, and apparently the worst they got from it was getting water in their meatuses. Could be handwaved by them being water-dwelling aliens.
Soldiers at the Rear: One of the criticisms of General Krell is that his plans are reckless. One clone points out that So are Skywalker's. However, unlike Krell, Anakin leads from the front. Anakin is willing to share the risk, in direct contrast to Krell's We Have Reserves attitude.
Something Only They Would Say: In "Rookies" when a clone trooper inspection team is heading towards a base occupied by droids, who pretend to be the regular troopers. When the droid signs off with their trademark "Roger, roger", the inspector notices that something is wrong, and actually says as much, but never makes the realization that he was speaking to an impostor.
Space Clouds: Inside a nebula, you literally only can see objects a few meters away from your viewport.
This is taken even further with Umbara, a planet, that's located inside a nebula, and is tus permanently stuck in darkness.
Space Elevator: The planet Quarzite from "Bounty" has one, as due to it's high pressured atmosphere, it's impossible to land with spacecrafts on it.
Space Is an Ocean: After the "Malevolence" gets its primary weapons destroyed, the ongoing fires around the damaged areas are accompanied by plumes of smoke billowing "upwards" as it cruises along. Not to mention the Republic ship that gets damaged and goes "down" later. It is particularly notable because the only planet in sight, and thus the only gravity well, is behind the ship.
Space Pirates: The "Ohnaka Gang", Hondo's band of primarily weequay pirates.
The clone army is divided to infantry units, light combatvehicle drivers (armed speeders and the "chicken-walkers") and heavy vehicles. There're also special units, such as AR Cs, Commando's, explosive-techinicians and scuba-troopers.
The droid army with it's massive array of different types of droids is more devided: light infantry consists of B1-droids, heavy infantry from B2 superbattledroids, and the Commando droids fill in the rank of elite-squads. Then they have lightvehicle-type Spiderdroids and Crabdroids, with the hovering AAT tanks as heavy-vehicles. Somewhere in-between are the droidekas, which have the firepower of tank, but size of the B2s combined with high speed. And that's just scratching the surface!
Standard Sci-Fi Fleet: Once again both the Republic and the Separatist fleets. They both mainly consist of capitalships, supportships, fighters and fighter-bombers.
The Nightsisters trilogy reveals that Count Dooku has ambitions of overthrowing Darth Sidious.
Status Quo Is God: As part of being Doomed by Canon, the series can't show any real progress in the war because the whole ordeal was basically a stalemate until Revenge of the Sith. There will be setbacks in a battle, peace negotiations will not succeed, and so on.
Stealth in Space: In "Cat and Mouse" Anakin is given a special new Republic ship with a stealth shield that renders it invisible from eyes and scanners to fly past a planetary blockade.
Stock Scream: Inevitable, this being Star Wars we are talking about. A clone trooper lets out a Wilhelm scream on the third of the Citadel episodes, and that's just one of several examples of the Wilhelm scream in the series.
Story Arc: Most episodes are standalone stories forming a greater whole, such as focusing on the efforts of different characters during a particular event.
The Strategist: Given the portrayals of other Neimodians, Mar Tuuk is a surprisingly capable. He is able to anticipate most of what his opposition will do, and makes an effort to know his enemy by learning all he can about Anakin.
Strawman Political: The leader of the Lurmen, Tee Watt Kaa, seems to be a straw pacifist. There are a lot of solid arguments to be made against war and violence. These arguments are made stronger by all of the on-screen deaths in the series, some of which are pretty horrific. Tee Watt Kaa could have made some of these arguments, but he does not. His position pretty much boils down to "if we put up any kind of fight at all, for any reason, even if we don't kill anybody, we'll be evil", and he does not explain any further than that. Plus, he does not even run for cover when he is in danger, and he orders his people to similarly stand still and accept their fates, which makes absolutely no sense.
This happens somewhat with near every local population that would prefer peaceful lives and/or neutrality over picking a side in the war - as well as near everyone outside the Republic itself who has reservations about it or suspects corruption. Ultimately, though the characters respect their opinions the narrative tends to present them as naive and misguided, if not weak.
Suicide Attack: Used by fake cleaning droids on Coruscant in season three, to avoid the signature of a peace treaty. And it works.
Suicidal Overconfidence: Queen Miraj Scintel thinks she can control Jedi almost as easily as any other slave, a fact which Dooku was quick to correct her on. Then she tried to disobey Dooku himself, and things naturally went downhill from there.
Summon Bigger Fish: "Bombad Jedi". It may be a native creature, so it is not exactly summoned, but otherwise this trope is played completely straight. Fish and all.
Surrounded by Idiots: Many of General Grievous' failures can be at least partially attributed to the hopelessly incompetent Battle Droids serving under him. One gets the impression he would be a very capable opponent if he could only convince the Trade Federation to build some more intelligent droids.
Technicolor Eyes: In an interesting variation the Father has black eyes but with green irises like his Daughter. This reflects his role as the balancer between the Light and the Dark.
Technology Porn: Much like the backgrounds mentioned above, the creators went out of their way to put as much detail as possible on spaceships (the best examples might be the Venator Star Destroyers, which are indistinguishable from the ones in Revenge of the Sith), and many episodes included other ways of showing off technology.
In "Downfall of a Droid", R2 threw an assasindroid out of Gha Nachk's ship, when it attempted to stop him from trying to contact Anakin. Unfortunately Gha Nachk caught him, and wasn't amused by his deeds.
In "Cargo of Doom" Cad Bane threatened Anakin with killing Ahsoka by throwing her out the airlock, if he didn't open the Jedi Holockron.
Time Lapse: In "Voices" Yoda asks the Council to meditate with him, in an attempt to find out the origin of the voice talking to him from within the Force. As they immerse themselves, images of the Temple and Corruscant are shown as the sun rises and sets a couple of times, and traffic passing with changing speed.
Time Skip: "Heroes on Both Sides" jumps ahead a few years, bumping Ahsoka up to her mid-teens along with a wardrobe change for the main cast.
Touch of Death: The Son has such a strong connection to the Dark Side that he can kill with a single finger.
Traitor Shot: Palpatine at the end of "Duchess of Mandalore", when the evidence that undoes the Separatist plot is revealed.
Train Escape: A variation happens in "To Catch a Jedi", when Ahsoka is recognised by law-enforcement while on a train. After being chased through a few cars, she uses the Force to open a door, and jumps off the moving train...just to run into even more police-officers.
Train Job: The plot of the episode "Bounty" revolves around a team of Bounty Hunters led by Boba Fett protecting cargo on a subterranean tram from a group of ninjas.
A short one occurs in "Lightsaber Lost" between Ahsoka and Cassie Cryar, who got hold of the former's lightsaber. It ends when the bounty hunter uses the weapon to cut a window and enter the car.
In "Bounty", Ventress duels the Kage warriors on the top of the sub-tram.
Transforming Mecha: The suicide-bomber infiltration droids from "Heroes on Both Sides" can not only disguise themselves as cleaning droids, but combine into bombs so they can fulfill their function.
Trap Is the Only Option: In season 6, the Jedi discover that the Sith were behind the creation of the clone army. However, given they are now in a full-scale war with the Separatists, they have no choice but to continue using the clones and hope that they can win the war before the Sith can enact their endgame.
Chairman Cho declares his intentions to exterminate a race that was willing to make peace with him, but had shown themselves to be a tad kill-happy in the past, and does it to their face. He then personally leads an attack against a numerically superior force that is lying in wait on their own territory without any military support of his own. It seems like he is actively attempting to earn the trope.
Echo is this in "Counter Attack", where he just charges right to the shuttle they were supposed to protect, while a commando droid fires a turret at him and he takes cover under the shuttle, only to be blown to smithereens, taking away the group's one way ticket out.
Though he lives, Anakin demonstrates some pretty bad judgement in "Sabotage". While investigating the home of munitions expert they suspect bombed the Jedi Temple, he warns Ahsoka to watch out for traps. While she walks off with the scanner, he sees something with a blinking red light and his first reaction is to walk up and touch it.
24-Hour Armor: Present in the first two seasons, because it was easier to animate Jedi wearing armor over their robes. This led to situations like the entire Jedi Council in session, wearing their armor for some reason.
Unspoken Plan Guarantee: Usually averted. Someone makes a plan and the explanation of this plan does not impact whether or not it fails. In "Storm over Ryloth", for instance, both Anakin and Ahsoka explain their plan in detail to the clones and they work perfectly.
The Un Reveal: When Grievous takes some damage and is in need of repairs, his medical droid begins to remove his cracked and charred mask... and we cut to commercials.
The Uriah Gambit: General Krell's horrendous battle tactics were revealed to be part of his plan to sabotage the Republic advance in preparation for his defection to the Separatists. By giving his troops impossible assignments they would be easily defeated, and ultimately wiped out, by the Separatist forces.
Use Your Head: Captain Ackbar takes out an aquadroid this way in the climatic final battle on Mon Calamari.
Vibroweapon: BX-series droid commandos often use vibroswords.
Viewers Are Morons: Ziro is one of the only Hutts that speak "Basic" over Huttese. Originally, he was supposed to speak into a microphone which translated his words, but the idea was nixed because they thought that no one would make the connection as to what the microphone was for. Left unexplained is why Ziro speaks Basic even when talking to fellow Hutts.
Villain Episode: Some toe the line with a greater focus on the villains rather than the heroes, but the "Nightsisters" arc is almost exclusively on Asajj Ventress and her vendetta against Dooku.
"Eminence" features the combined efforts of the Death Watch and Darth Maul against the Black Sun and Hutts, with nary a hero to be found.
Villain Exit Stage Left: Oh so many with General Grevious. They must have used that same animation of Grevious escaping in his own personnal ship a dozen times.
Darth Maul and Savage Oppress pull one in "Revival".
Villain Has a Point: While his methods may have not been the best, the motivation for Slick's betrayal does have merit. He argues that the clone soldiers are nothing more than puppets to the Jedi Order and merely wanted freedom from them, which considering how they are created by and indoctrinated from birth to follow them without question and are treated as disposable throughout Star Wars, it's hard to say this isn't the case.
Also, the one responsible for the Temple bombing Bariss in Season 5 is 100% percent correct when explaining the motive behind it, though nobody believes those words.
Weapon Tombstone: After making peace withe Talz, Senator Chuchi of Pantora uses a Talz spear to plant the former Chairman's helmet, crossed with the chief Talz's own weapon, in the ground to seal the deal.
We Have Reserves: Oddly, the clones see themselves as expendable. They believe they are replaceable, and if the mission is over there is no reason for other clones or Jedi to risk their own lives to save them. Lampshaded by Slick in "The Hidden Enemy", who is pretty angry about it and feels that the clones deserve better. One senator takes this attitude towards the clones as well, but Padme objects to it, telling him that they are people as well.
Well-Intentioned Extremist: Barriss Offee reveals herself to be this when she gives her reasons for bombing the Jedi Temple in "The Wrong Jedi". She believed that the Order had started the war and were fighting for a corrupt Republic and bombed the Temple to strike a blow at that. Slick would also qualify in "The Hidden Enemy".
The Mortis trilogy. Anakin Skywalker realizes the burden on his shoulders as The Chosen One, which was something he previously dismissed as a myth. His vision of his own future would also count if the Father hadn't erased his memories of it. Meanwhile, Ahsoka Tano sees a vision of her future self telling her to stay away from Anakin, because he'll lead her to the Dark Side. The Son also corrupts Ahsoka, and through "Sithsoka", she reveals her subconscious fears and resentments: her frustration towards Anakin's criticality and dissatisfaction.
The Nightsisters trilogy served as one long Wham Episode: It features a major change to the status quo ( Darth Sidious forces Dooku to have Ventress killed, but she survives and deserts from the Seperatists), delves into Ventress' past, introduces the Nightsisters, Mother Talzin, and Savage Opress, features a number of brutal death scenes (heralding the darker tone for the series from that point on), and sets up a major future event, namely Darth Maul's return.
In "Revenge", Darth Maul returns with a vengeance, makes it brutally clear what sort of measures he's willing to take for the sake of revenge on Obi-Wan, and survives the episode, with the ending showing that he's not going away any time soon...
The Shadow Collective arc ("Eminence", "Shades of Reason", and "The Lawless"). By the end of "The Lawless", Pre Vizsla, Duchess Satine, and Savage Opress are all dead, Darth Maul has successfully conquered both the criminal underworld and Mandalore before being left at the mercy of Darth Sidious, and Mandalore is left in the midst of a civil war, with the future of both the planet and Maul being left unresolved.
The Sabotage arc (comprising the final episodes of season 5) covers one of the few issues that isn't a Foregone Conclusion in this show: what happens to Ahsoka between now and Revenge of the Sith. After feeling betrayed by the Council and actually being betrayed by Barriss, Ahsoka leaves the Order.
In a straight example of the trope, early in the movie Mace Windu requests three Republic cruisers to help with the current situation and is never seen again, with no reference made to what the ships were for or where he is during this critical point in the war.
In Slaves of the Republic, the last time we see R2-D2 is when he gives our heroes their lightsabers in their escape attempt. After the escape is foiled, we don't see Artoo again, nor do we see him getting captured as well.
In "Destiny", the pen-ultimate episode of the series, Yoda has a vision of an utopistic Jedi Temple, in which Dooku is still a respected Jedi Master, Qui-Gon and Adi Gallia are alive, Barriss Offee and Ahsoka are still members of the Order, and everyone seems serene.
What Measure Is a Mook?: Clone troopers die throughout the Citadel trilogy and the other troopers and Jedi continue onwards, but when Jedi Master Even Piell dies the entire group pauses for a brief funeral.
In "The Blueshadow Virus" Doctor Nuvo Vindi asked Padmé "what's a lifeform like you, do in a swamp like this" when she got caught by the droids protecting his lab. She replied that she was about to ask him the same question.
In "Bounty" after Ventress entered the Cantina, and asked for a drink, a Bounty Hunter tried to hit on her with this question. When he continued pushing her, she stabbed him, with a lightsaber.
What the Hell, Hero?: In "The Jedi Who Knew Too Much", Ahsoka snaps at Anakin about seemingly doing nothing to help her after she was arrested, and doesn't think much of his excuse that the guards wouldn't let him see her. As she has just spent the last third of the episode evading capture, she gets more reasonable once given a chance to calm down.
Another one in "The Wrong Jedi", where Ahsoka walks away from the Jedi Order because the Jedi Council threw her under the bus and pretty much made up their minds about her before her trial with them. She never calls them out directly, but she shares it with Anakin, who agrees. Ventress outright calls Anakin on this, and he can't really contradict her because she's right.
Whip It Good: The Zygerian slave arc features many laser-whips used to keep slaves in line.
Who Dares?: When attacked, General Krell decrees "You dare to attack a Jedi?!"
Huyang also says it when his head gets blasted off by a Weeqay pirate.
Todo has no idea Cad Bane's installed a bomb in him until moments before it goes off.
In "Sabotage", an unwitting munitions specialist for the Jedi is fed explosive nano-droids in a plot to attack the Jedi Temple.
Wipe: Most of the scene-changes are executed by having the two scenes overlap, much like in the movies. In fact it's easier to count when it's not used. Idiosyncratic Wipes, like a clock-effect are also used a lot.
In "Trespass" the warmongreling Chairman Cho of Pantora, tried to order Rex and his troops to attack the talz. Rex refused, stating that his orders are to protect the Chairman.
In "Gungan Attack" the inexperienced Prince Lee-Char wasn't willing to follow Anakin's advice of leaving the Separatist and Quarren occupied Mon Calamari, because he feared he'd leave his people to die. Anakin warned him with "due respect" that if they stayed, all them were going to die.
In "To Catch a Jedi" Windu wanted to keep Anakin out of the search for Ahsoka, who escaped to the Corruscant underworld after being framed. Anakin refused his suggestion with "due respect".
With My Hands Tied: Ahsoka does this to a round-dozen corrupt Mandalorian Police after being captured in "The Academy" while blocking stun blasts from mounted turrets, even managing to capture their leader in the process, all with her hands bound.
She also does it in "A Friend in Need".
World-Healing Wave/World-Wrecking Wave: Taken to their logical extreme in the Mortis trilogy: on Mortis the healing and wrecking wave are following eachother in a constant circle, as part of the planet's Light and Dark in-balance symbolism: when night falls all plants die, and are reduced into ghastly glowing forms, and massive thunder storms start. When dawn approaches all plant life is renewed.
World of Badass: The odds are that any named character in this series will be of varying degrees of badass, or at least will take a few levels by the end of their episode. That, or they're killed off.
Savage Opress kills Adi Galia by impaling her TWICE, once with his horns on his head, the second stab with his lightsaber.
Darth Maul chokes Bo-Katan (but doesn't kill her) with the Force to make a point about doubt leading to failure. He later ruthlessly murders Duchess Satine.
Taken Up to Eleven by General Grievous, who has all of zero qualms about successfully committing genocide against the Nightsisters, an all-female clan.
Would Hurt a Child: Darth Sidious has several Force-sensitive infants abducted so that he could perform potentially lethal experiments on them. Cad Bane, who did the actual abducting, didn't care what became of the children, so long as he was paid.
Prime Minister Almec threatens to kill Satine's nephew if she doesn't give in to his demands.
Darth Maul slaughters dozens of innocent people, including several children, to draw the attention of the Jedi.
Hondo Ohnaka didn't seem to object to the idea of hurting the younglings in the episode "A Test of Strength" in order to get their lightsaber crystals. He averts this two episodes later when he claims he doesn't like taking children into battle, and waves off the earlier incident. He probably just jumps between Would Hurt a Child and Wouldn't Hurt a Child depending on his mood. Word of God is that he would have hurt the kids if necessary, but was hoping to retrieve their crystals with a minimum of fuss.
General Grievous has multiple Padawan braids among his trophies in "Lair of Grievous" and later relishes the idea of killing the Jedi younglings for their lightsabers in "A Necessary Bond".
Wrench Wench: Ahsoka, taking after her master, has become a skilled mechanic during the series; in the Mortistrilogy, she is shown repairing a badly wrecked shuttle by herself and even modifying the repairs at Obi-Wan's request.
Wrestler in All of Us: While fighting Obi-Wan in "Kidnapped", Darts D'Nar at one point hoists Obi-Wan high over his head and then slams him down onto the floor.
Xanatos Gambit: Palpatine is the Big Good chancellor of the Republic and he's also the Big Bad on the Seperatist side. He'll be in power no matter which side wins.
You Are Number Six: General Krell makes a deliberate point of referring to every clone trooper by their identification number instead of by the nicknames that they have been given by fellow clones. He does refer to Sergeant Appo by his nickname, and even uses Rex's name at one point, so it seems that using the identification numbers is something he only does when he is mad at the clone in question or when he is proving a point. Which is most of the time.
You Fool!: At the conclusion of Umbara arc, General Krell decrees that Dogma was "the biggest fool of all."
Grievous, frequently, but it helps that he does this to droids. One episode had a droid continually irritating him, and any viewer who saw the trailer was wondering when he would get his head smacked off.
In a more brutal example, the leader of Death Watch casually kills one of his men for failing to kill Obi-Wan.
Death Watch themselves get hit with this by Dooku for failing to get rid of Satine. They survived, but now they're independent.
Count Dooku quotes the complete line when he disavows Asajj Ventress as his apprentice and orders her death. Particularly painful since she had not actually failed him, but Darth Sidious wanted to test Dooku's loyalty.
Count Dooku: You have failed me for the last time.
After delivering a captured R2-D2 to the Separatists, Trandoshan scavenger Gha Nachkt demands a higher fee from General Grievous, who promptly gives him a "bonus" in the form of a lightsaber through his gut.
Argyus received "payment" for his help in freeing Nute Ginray, courtesy of Ventress.
The Son gave Ahsoka a Touch of Death after she delivers to him the only weapon that can kill the Father.
Dooku does this to Moralo Eval when his testing course for the bounty hunters is easily outwitted. Fortunately for Eval, he did this by forcing him to fight Rako Hardeen to the death. Since Hardeen is Obi-Wan in disguise, he spares Eval. As such, Eval just got replaced by Cad Bane as team leader.
At the conclusion of "Arc Troopers," Commander Cody and Captain Rex congratulate Echo and Fives on their performance during the battle. Rex explains that they showed valor and real courage, and then says that they reminded him of himself.
When Dogma is first introduced, Anakin remarks that his determination and reflexive obedience to orders reminds him of Captain Rex. Rex concedes that that might have been true, but only back in the day.
Your Terrorists Are Our Freedom Fighters: Discussed in regards to the Onderon freedom fighters, who Obi-Wan is worried might become terrorists under the wrong circumstances. He joins the mission with Anakin and Ahsoka to hopefully keep them in the "freedom fighter" category.