All spoilers regarding the Prequel Trilogy, the Original Trilogy, and The Clone Wars are unmarked. Examples relating to Disney's EU and the new movies can be spoiler-tagged if deemed necessary.
Tropes specifically applying to the characters based on their appearances in Star Wars Legends can be found here.
Located on the western edge of the galactic disc, the Unknown Regions are a mapped but unexplored expanse of space that serve as a source of mystery to the denizens of the galaxy, as they are said to be home to thousands of wonders and horrors found nowhere else. Basically, this area of space is generally marked as Here There Be Dragons. A handful of worlds within the Unknown Regions are known to certain worlds and galactic societies, such as the planet Ilum to the Jedi Order. The Chiss Ascendancy is one of the ruling powers of the region, although they have limited contact with the rest of the galaxy. Following the fall of the Empire, surviving diehard Imperials fled into the Unknown Regions where they joined secret Imperial facilities, eventually forming the secret foundation of the First Order.
An ocean world with rocky archipelagos. It is home to the first Jedi Temple. After Kylo Ren led a massacre on Luke Skywalker's Jedi, Luke went into exile and searched for the first Jedi Temple, finding Ahch-To.
- Arboreal Abode: Not quite a house, but there's a hollowed out tree on the temple island that serves as a library housing original Jedi texts.
- Eldritch Location / Psychological Torment Zone: There's a sea cave on the island that's drenched in The Dark Side, not unlike the cave on Dagobah, and contains a mirror-like wall. When Rey enters it seeking answers about her long-lost parents, things quickly get weird and creepy. The cave ultimately presents Rey with an image of herself, both playing upon her greatest fear of always being alone and unwanted, and also hinting at the Awful Truth about her parents.
- Single-Biome Planet: It's mostly ocean, with a few islands there and about.
A sentient species of short humanoid amphibians with bird-like skinny legs, females of the species took on the role of caretakers and attended to the ancient Jedi structures on Ahch-To.
- Adapted Out: Don't appear in Marvel's Comic-Book Adaptation.
- Bizarre Sexual Dimorphism: Culturally speaking, female lanais remained on their home planet as caretakers to the ancient Jedi temple in a nunnery-like manner while males of the species, known as Visitors, spend much of their lives on the sea on hand-crafted boats fishing and gathering enough food to keep their fellow Lanais well-fed, coming back to the islands each month to share the feast.
- Butt-Monkey: The Caretakers maintain the structures on Ahch-To, so they get highlighted for comedy whenever there is collateral damage in The Last Jedi. Rey blasts a hole in her hut, after which some Caretakers can be seen chattering angrily while repairing the hole, and she later cuts through a rock formation, which tumbles down the cliff and destroys a Caretaker's cart. Chewie also breaks down the door to Luke's hut, and Luke blows away the walls and ceiling off Rey's.
- Hair-Trigger Temper: Their work on Ahch-To is continuously interrupted by Rey's force training, much to their displeasure.
- Humanoid Alien: They have the basic humanoid body shape but are clearly alien in appearance.
- Mix-and-Match Critters: They are anthropomorphic frog-like beings with avian legs.
- One-Gender Race: The Caretakers are all female. Rian Johnson compared it to a nunnery. Though the novelization explains that the males that they do have are on the ocean.
- Servant Race: They serve as permanent Caretakers of the Jedi Temple on Ahch-To.
- Sacred Hospitality: As well as maintaining the buildings, they house and feed various visitors to the planet.
- Space Jews: Are space nuns.
- The Thing That Would Not Leave: They view Luke as this. While they tolerate his presence on Ahch-To, they aren't happy about it. They also view Rey as this and are even less impressed when she turns up, on account of her tendency to accidentally break stuff.
- What the Hell, Hero?: Downplayed and Played for Laughs. When Rey inadvertently shoots a hole in a wall, they start fussing over it and jabbering crossly at her.
The homeworld of the mysterious and isolationist Chiss species and capital of the Chiss Ascendancy.
The Chiss Ascendancy
A civilization believed to have been mythical before Mitth'raw'nurodo was found by the Galactic Empire, due to the Ascendancy ceasing contact with the rest of the Galaxy for unspecified reasons. The Chiss were trade partners with worlds including Lysatra before going into isolation. Due to detecting an adversary in the Unknown Regions, Mitth'raw'nurodo hoped to make an ally out of the Empire for a higher chance of the Ascendancy's survival.
- Adaptational Nice Guy: Force-sensitivity is rare among Chiss in both Canon and Legends, but their attitudes towards it are very different. In Legends, Force-sensitivity among Chiss was considered a genetic impurity and persecuted, to the point that they either had to have surgery to suppress it or go into exile on pain of death (and the choice was also dependent on social status, with the lower-class usually being forced to take the latter). In canon, however, while still rare, Force-sensitivity is more common among young girls, limited to precognition, and disappears as they grow older, and said girls are often employed as navigators in the Unknown Regions, suggesting that the Ascendancy is a lot more tolerant of the Force than in Legends. However, according to Thrawn, the girls seem to just be a means to an end and are cast aside as soon as they lose touch with the Force.
- Amazing Technicolor Population: They're blue-skinned with red eyes. People like Driller have mistaken Thrawn for a Pantoran, another blue-skinned humanoid species.
- Canon Immigrant: A Legends species made infamous by Grand Admiral Thrawn himself.
- Common Tongue: Sy Bisti is a lingua franca they use to communicate with other worlds for trade, one of these worlds being Lysatra.
- Everybody Has Standards: The Chiss were disgusted with Thrawn's modus operandi (preemptive strikes) as it violated their code of honor, to the point that they called for his exile. The government has no choice but to comply to the public's demands, but as per protocol for exiling, they leave Thrawn with enough supplies to survive off of for a while. Actually, Thrawn and the Chiss government used this as the perfect excuse to get Thrawn to make contact with the Empire.
- Gender-Restricted Ability: It appears to be this with Force-sensitivity among the Chiss. While Thrawn says there are a handful of males, a vast majority are girls for an unknown reason.
- Hired Guns: In Commander (which takes place after A New Hope and before The Empire Strikes Back), there are female Chiss mercenaries that were hired by rebel Senator-in-exile Johhar Kessen to fight for the Rebel Alliance.
- The Exile: They do this to people that presumably are over the top, like Thrawn. Thrawn's exile was apparently caused by public opinion rather than a decision made by his superiors, though. Though apparently, it isn't. Thrawn having a 0% Approval Rating just happened to be a good excuse for him and his superiors to send him away to be deliberately found by the Empire, wanting to prepare an ally in the event something from the Unknown Regions decides to come after the Ascendancy.
- Gone Horribly Wrong: Possibly. Their plan was to ally with the Empire against a much worse threat in the Unknown Regions, giving them Thrawn and some intel about the Unknown Regions as a bargaining chip. The Empire fell and the remnants fled to the Unknown Regions, using that intel to hide and rebuild. If the First Order is tied with the unknown threat, as is implied, then the Chiss' plan to fight against them just gave their adversary an army. And since the Chiss are nowhere to be seen in the Sequel Trilogy...
- Meaningful Name: "Chiss" is similar to the game of chess, and considering Thrawn...
- Puberty Superpower: Inverted. Since the Chiss have no way of teaching their people to use the Force, their ability to use it fades over time, so the only Force-sensitive Chiss are children.
- Red Eyes, Take Warning: So far, this only applies to Thrawn. Considering his people also exiled him, this might apply to those that helped put that order to action. This coloration apparently lets them see a bit of infrared.
- Schrödinger's Canon: Their language is Cheunh, as Sy Bisti is the lingua franca of that and other languages near the Ascendancy.
- Shrouded in Myth: The Chiss ceased contact with other species in the Galaxy long enough for others to believe the Chiss were a myth.
- Unwanted Rescue: Thrawn has no idea if his people want his help or not in defending the unknown threat, but neither opinion will stop him from protecting them. It's probably just public opinion. He's acting off of orders of his superiors, who obviously want to protect their people and said people are likely fine with their government protecting them so long as they don't know that Thrawn was involved.
- Vagueness Is Coming: They've apparently dealt with threats that the rest of the Galaxy has no idea exists. However, there is at least one that causes Thrawn to request Palpatine for assistance in apprehending it, but he never names it, either because it wasn't important at the time of his proposal or he doesn't know what it is either. And if Thrawn of all people doesn't know...
- What Happened to the Mouse?: They're nowhere to be seen in the Sequel Trilogy or any works surrounding it, even though the First Order comes from the Unknown Regions and is heavily implied to be tied with the mysterious threat to Csilla.
- What the Hell Is That Accent?: Only because we only have one person to judge it from. Presumably, it's a Danish accent, if Thrawn (who is voiced by Lars Mikkelsen, who is Danish) is any indication. Ar'alani is described as having a heavy accent, and Thrawn's accent was heavier when he first met the Imperials.
An admiral of the Chiss Defense Fleet. She greeted Eli Vanto when he was sent by Thrawn to meet the Chiss Ascendancy.
- The Cameo: She doesn't do much in Thrawn, her reintroduction to canon, other than welcome Eli to the Chiss Ascendancy at the end of the book.
- Canon Immigrant: She was originally from Outbound Flight.
- Odd Name Out: The only named Chiss besides the young Force-sensitive navigators to have a two-part name, a fact that puzzles Eli Vanto.
- Schrödinger's Canon: She is an ally of Thrawn, despite their frequent clashes over his morals in battle tactics. She even secretly allies with him and aids him in his activities even if their superiors do not approve of Thrawn's actions.
- Shout-Out: To Ari Roselani, a Thrawn cosplayer that met and befriended Timothy Zahn, which led him to make Admiral Ar'alani in tribute to her.
- Tuckerization: Her name is a jumbled up version of Ari Roselani's name.
- Mitth'raw'nuruodo on the Imperial Navy page.
Also known as the Iron Planet, Demir was invaded at some point by the First Order during the their attempted conquest of the Unknown Regions.
- Binary Suns: The planet has two suns visible in the sky.
An icy planet that was the greatest known source of kyber crystals in the galaxy. Its location was kept secret by the Jedi Order for generations. After the fall of the Order, the Empire mined the planet's crystals for use in the Death Star's superlaser.
- Always Night: It's stated in The Clone Wars that Ilum's nights are far longer than its days.
- Power Crystal: It was the greatest source of kyber crystals known, having more than the other three known sources (Jedha, Christophsis and Lothal) combined.
- Single-Biome Planet: It's a cold, dark ice planet.
An icy planet that was transformed into a mobile laser superweapon akin to the Death Stars by the First Order.
- Ambiguous Situation: Given the similar climate, the fact that they're in the same area on maps (they're both in Sector 7-G and are identical in diameter), and both being abundant in kyber crystals, it's been theorised by many that Starkiller Base might be Ilum. The novel Ahsoka even notes Ahsoka witnessing vast scars across the planet created by Imperial stripmining, exposing the mantle. Pablo Hidalgo, for his part, has noticeably refused to make a definitive statement either way.
- Earth-Shattering Kaboom:
- Unlike the Death Stars, it can shatter multiple planets in a single system at one time. Ask the Hosnian system, or what remains of it, anyway.
- The Resistance destroying the reaction core results in Starkiller Base itself blowing up.
- Meaningful Name: It slowly kills stars so it can absorb energy from them.
- Mythology Gag:
- It charges power by absorbing the energy of a nearby sun, similar to the Star Forge from Knights of the Old Republic. Both also are apparently powered by darkness. The difference being that Starkiller Base is a glorified Death Star while the Star Forge is able to forge a near-infinite amount of starships for the Rakatan Infinite Imperial military. It's possible this was intentional.
- "Starkiller" was the original last name of the protagonist in early drafts of Star Wars.
- The man who developed the original Death Star was named Galen Erso. Galen Marek is the name of the protagonist of the The Force Unleashed video games, his codename being "Starkiller".
- Power of the Void: The novelization of The Force Awakens states that Starkiller Base also runs on dark energy, specifically a form of it called "quintessence". It was thought to be impossible to tap into, but the First Order found a way to harvest it...
- Snow Means Death: Well, Starkiller Base has a snowy climate, and it's a deadly superweapon responsible for the deaths of billions and maybe more, so...
- Suspiciously Similar Substitute: The Star Forge. Considering what's going on in this canon, this might actually be on purpose.
- Up to Eleven: Okay, so the Death Stars are giant space battle stations with superlaser powered by kyber crystals so it can destroy one planet at a time, alrig— wait, Starkiller Base is a freaking planet turned into a giant battle station with a superlaser powered by not only kyber crystals, but dark energy, and can destroy multiple planets at a time?!
A remote planet in the Unknown Regions that was the site of a massacre by the First Order in 34 ABY.
- Doomed Hometown / Rape, Pillage, and Burn: For unknown reasons, First Order troops led by Kylo Ren massacred and destroyed a village on Tehar; the only survivors were two children, Eila and Kel, who fled to Castilon.
- They Know Too Much: Some characters theorise that the First Order may have wiped out the village on Tehar to cover up top secret and shady activities they were carrying out there, though at this stage it's rather ambiguous. When they learn of Kel and Eila's survival, the First Order subsequently goes to a lot of effort hunting the siblings down to hide the atrocity.
- Kel and Eila on the Colossus page.
A remote, seldom mentioned planet in the Unknown Regions. Supposedly the home of an ancient civilization called the Rakata.
- Death World: Was depicted as this in Legends, and given that the only people (yet) in-canon to approach it get instantly blown up, it's safe to say it probably still applies.
- Schrödinger's Canon: Was in Legends also known as Lehon, and was home to the incredibly vicious and Force-sensitive Rakata, who at one point enslaved most of the galaxy in their Infinite Empire.
- It was also the site of numerous Dark Side artifacts, including the Star Forge, a Starkiller Base-esque superweapon powered on the energy of stars.
Other Unknown Regions species
A mysterious species of mute beings who teach other beings how to travel through the constantly changing hyperspace lanes of the Unknown Regions. Having served both the Grysk Hegemony and the First Order, their motives and origins are unclear.
- All There in the Manual: What few details that are known about them come from sourcebooks.
- Hidden Agenda Villain: Why they keep assisting tyrannical groups navigate the Unknown Regions and grow in power is unclear.
- In the Hood: The only ones seen so far wear long purple robes with hoods hiding their faces.
- The Speechless: They are apparently mute, so how they communicate and teach other species how to navigate the Unknown Regions is unclear.
- "Grysks are a species living somewhere in the Unknown Regions. Creatures half of myth, whom few have ever seen. It is said that they are nomads, with no fixed home, traveling in spacecraft so numerous they blot out the stars. They are said to be terrifying warriors, overwhelming their opponents by sheer numbers and ferocity."—Grand Admiral Thrawn
A supposedly nomadic warrior species that has become an extensive threat in the Unknown Regions. The Grysk have tapered skulls with angled brow ridges and deep set eyes plus wide shoulders.
- Big Bad: For the Chiss Ascendency.
- Composite Character: The Grysk combine traits of multiple threats from the Legends continuity.
- They share a lot of characteristics with the Yuuzhan Vong, including their physical appearance, nomadic lifestyle, warrior culture, and conflict with the Chiss pre-dating their assaults on the known galaxy. They also force other species into servitude, much like how the Vong did with the Chazrach. The key difference is that the Grysk don't use biotechnology and appear to not be extra-galactic.
- They're also similar to the Vagaari, being a marauding species native to the Unknown Regions rather than another galaxy who frequently used prisoners as shields.
- The way the Grysk manipulate their vassals by taking hostages or other precious items to control them is the same method used by Nuso Esva, an Unknown Regions warlord Zahn created for Choices of One.
- Crazy-Prepared: Grysk warriors replace their teeth with false sets that contain break-apart weapons, communicators, and lock-breakers that they can utilize if captured.
- The Man Behind the Man: They were responsible for backing the Separatists research into cortosis ore as a way to influence and observe the Clone Wars in preparation for their invasion, as they were particularly worried about the Jedi.
- Manipulative Bastard: They control their vassal species through manipulation and coercion, finding out every little weakness of their targets to exploit and dominate. Thrawn and his allies conclude that just a handful of Grysk could manipulate and control a planetary government, and their slaves would rather commit suicide than risk being captured and have the Grysk punish their homeworlds.
- Mook Chivalry: An unusual variant. On the ground they avert it and fight in a highly efficient manner that heavily favors ambushes and dirty tricks. In space they have a cultural obsession with sending in one ship at a time while a second ship flies on it's wing as reserve and does nothing, and it colors their thinking so much that if presented with multiple targets they'll always go after the closer one. This costs them battles where they should have had an overwhelming advantage pretty much every time they're encountered.
- Outside-Context Villain: For the Empire and to a certain extent the Chiss, who know very little about the Grysk aside from rumors and a few encounters.
- Shrouded in Myth: The history and goals of the Grysk are a complete mystery, as they tend to leave very few survivors to spread tales of their existence. Thrawn also doubts the accuracy of what few things are known about them, particularly them being nomads, as he believes their starship designs indicate a preference for planetary conditions instead of being spaceborne all the time.
- Self-Destruct Mechanism: The Grysk are quite fond of these, as they have a policy of destroying any bases or ships that could fall into enemy hands to prevent any information about their plans or details about their species from being learned.