- Accidental Pervert
- The Ace
- Almighty Janitor: Before Kenshi reveals that he's a Sacred Mechamaster, he manages to earn this kind of reputation as Lashara's servant.
- Animal Motifs: Kenshi is constantly compared to the Koros.
- Anti-Hero: Begins as a very mild Disney Anti-Hero; he does willing takes part in an attack on Lashara hoping to be returned home, but ultimately refuses to actually kill her when ordered. One Mook-Face Turn later, and he's fully on the side of the angels for the rest of the series.
- Artificial Human: It is revealed by Naua that he is descended from one of the three artificial humans created by the Ancient Civilization to defeat Gaia, which was sent to another world as a last-ditch measure if the other two failed.
- It is hinted that the artificial human in question may be his mother Rea, as a silhouette of her can be seen in episode 11.
- The Tenchi Ban 13.8 doujinshi formally revealed that Kenshi's mother was that artificial human. She was found by Tenchi's mother and adopted into the Masaki clan before becoming Nobuyuki's second wife, explaining the previous revelations that confused the issue.
- It is hinted that the artificial human in question may be his mother Rea, as a silhouette of her can be seen in episode 11.
- Badass Family: Although none of his more familiar relatives really appear, it's clear that he's learned a lot from them (even while he'd been overshadowed by them).
- Beware the Nice Ones
- BFS: The Tenchi-ken, a sword made from a compressed mountain!
- Big "NO!": Has said it four times during the series' run: one involving all the girls stripping him, two involving Mexiah and one involving Flora.
- Boke and Tsukkomi Routine: The boke to Chiaia's tsukkomi.
- Catch Phrase: "I'm sorry!" (Usually when he's being scolded by Chiaia.)
- Chaste Hero: He shows some signs of it, but we can't blame him; he just wants to go home.
- Chekhov's Gun: Prior to him being sent to Geminar, Kenshi was hypnotized by Washu to ensure no one knows they have a spaceship (or any of their outer-space Magitek in that matter). This becomes important in the last episode when Chiaia promises to let him dig all the crystals he wants if he beats Gaia, causing him to form a Light-Hawk BFS and break through Gaia's impregnable armor.
- Chick Magnet
- Crouching Moron, Hidden Badass
- Embarrassing Nickname: Lithia calls him "wild beast", which later becomes justified following her Noodle Incident with him.
- Even the Guys Want Him: Ulyte seems a bit too friendly with Kenshi.
- Subverted, since Ulyte had been turned as a child into one of the three ancient female dolls.
- Fish out of Temporal Water: In the beginning. He gets better as the series progresses.
- Happy Ending Massage: Turns out his massages give the girls this feeling as an aftereffect.
- Kid Hero: Kenshi is 15, but looks and acts young enough to qualify.
- Magnetic Hero: It's shown and discussed several times in the series that his influence catalyzes those around him into becoming better people and True Companions.
- Meaningful Name: His given name means "Swordsman", referring to his Weapon of Choice.
- Mistreatment-Induced Betrayal: In the first episode, he starts out serving the "Masked Knight" (Dagmyer) while trying to assassinate Lashara, in the hopes of getting home. Dagmyer tries to force Kenshi to do the dirty work he failed at, insults him at every opportunity, tries to have him killed when he outlived his usefulness, and adds insult to injury by admitting that he'd never intended to help Kenshi return home in the first place. A few minutes later, Dagmyer's offended that Kenshi decided to betray his "benefactor" and fight his way out of danger.
- Mook Horror Show: Both in and out of his Sacred Mechanoid, Kenshi is a fearsome opponent...and that's before you piss him off.
- Mundane Made Awesome: Kenishi uses his Super Strength, speed, and Badassness to do chores around the school. A lot faster than the staff can handle (ex. by the time it took a maid to finish half her room cleanings, he finished the same number and came to help her). And that mosaic on the arc. While the three artisans are discussing how to replicate the original mosaic on one tower, Kenshi was already done.
- My Master, Right or Wrong: When he's first captured by Lashara, Kenshi plays dumb about his bosses out of honor. Fortunately, he figures out that his loyalty wasn't reciprocated.
- Nature Hero: Even the elves are impressed by how well he knows his way in the forest.
- Ninja Pirate Zombie Robot: One-quarter human and one-quarter Jurian on his father's side, and half Artificial Human on his mother's side.
- Normal Fish in a Tiny Pond: Back home, he was the runt of the Masaki family. On Geminar, he's practically invincible.
- One-Man Army
- Real Men Wear Pink: Kenshi can cook, clean and kick your ass 12 ways to Sunday.
- Red Oni, Blue Oni: Red to Chiaia's blue.
- Short Hair with Tail: Like his half-brother, he also sports this.
- Tyke Bomb: A doujinshi released by series creator Masaki Kajishima revealed that Tenchi's family had deliberately raised Kenshi to prepare him to be sent to Geminar. Since he was never given any information about Geminar, he was ultimately The Unchosen One anyway.
- Unlucky Everydude
- Unwitting Pawn: He was only used by Dagmyer to assassinate Lashara. Even Chiaia points it out during his brief imprisonment.
Lashara Earth XXVIII
- A Child Shall Lead Them: She's crowned as the ruler of Shtrayu in the first episode, but Babalun effectively controls the country while she's attending school in the Holy Land.
- Cool Ship: The Swan.
- Jerk with a Heart of Gold
- Money Fetish: See below.
- Ms. Vice Girl: She eagerly takes advantage of all the money and status she can get (especially what she can get because of Kenshi), but from the moment she spares Kenshi she shows a deep compassion for both him and Chiaia.
- Ojou Ringlets
- Phenotype Stereotype: Averted since she's a native of Geminar.
- Please Don't Leave Me: Tells Kenshi this in episode 10 upon realizing that he is a free agent.
- Red Oni, Blue Oni: Red to Chiaia's blue.
- Royal "We": The Funimation English translations use this to translate her use of Keigo and the first-person pronoun "ware".
- Shout-Out: Her name is a reference to Lashara Moon and Photon Earth from Photon, another work from Kajishima.
- The Woman Wearing the Queenly Mask: She's not the most regal personality in the world, but it's made clear that a lot of how she acts is because of the weight of responsibility she's had to bear.
- Action Girl
- BFS: Wields one in episode 3.
- Boke and Tsukkomi Routine: Always the tsukkomi when Kenshi does something stupid.
- Fiery Redhead
- Heroic BSOD: A minor one in episode 8 after learning Mexiah is really Doll and her true origins.
- The Lancer
- Overshadowed by Awesome: Between how overwhelming Kenshi is and the lack of action scenes in the first half of the series, it's easy to forget that she's one of the stronger Sacred Mechamasters.
- Red Oni, Blue Oni: Blue to Kenshi and Lashara's red.
- Significant Green-Eyed Redhead
- Tsundere: Type A
- Unlucky Childhood Friend: To Dagmyer, despite her still clearly carrying a torch.
- Bi the Way: If episode 8 has anything to say about it.
- Cool Big Sis
- Even the Girls Want Her: She is quite popular around the girls.
- The Hedonist: Oh, yes!
- In-Series Nickname: "Big Sis Mexiah" for Kenshi. Note that she insisted on him calling her that.
- Ms. Fanservice: By far!
- Old Maid
- The Reveal: In episode 8, when she turns out to be Doll and revealed in episode 11 to be an Artificial Human created from an ancient civilization to defeat Gaia.
- Shotacon: Poor Kenshi...
- Teacher/Student Romance: With Kenshi, though it's one-sided.
- Verbal Tic: In episode 3 when training Kenshi for his job as a masseuse, she starts ending her sentences with "zamatsu" (translated in Funimation's subtitled streams as "Don't you know?" and in the English dub as "Baby Boy/Girl".). She still says it on rare occasions.
- Amazingly Embarrassing Parents: Flora.
- Hime Cut
- Icy Blue Eyes
- Royal "We": Used in the Funimation streams to translate her use of Keigo. The English dub has her use "I" in contrast to Lashara.
- Shipper on Deck: She fully supports her bodyguard Yukine's crush on Kenshi, and eagerly schemes to bring the pair closer (and humiliate Lashara in the process).
- Shout-Out: Her last name is a reference to Sir Papacharino Nanadan from Photon, one of Kajishima's works.
- Action Girl: Maria's bodyguard.
- Animal Motifs: Her Sacred Mechamaster outfit features a butterfly on her back. Her Sacred Mechanoid also has a moth motif.
- Big Damn Heroes: Shows up in the nick of time to prevent the Meteor Fall (which was hijacked by Cordyline and the bandits) from destroying the Swan in episode 10, giving Kenshi a chance to take out one of the reactors that was keeping it afloat.
- Crush Blush: Practically every time she looks at Kenshi.
- Cry Cute: In episode 6 after finding out that her bare breasts are pressing against Kenshi's chest (after being disrobed and pushed by Flora, no less), requiring both Lashara and Maria to comfort her afterwards. D'aww...
- Foil: To Chiaia, as Maria's bodyguard.
- Miko: She may not look it, but she comes from a long line of them back in her homeland who were able to communicate with the Goddess, just like Real Life mikos with the kami.
- Rei Ayanami Expy: White-haired, stoic and dutiful, except for when she acts shy in the presence of the guy she's in love with.
- Shrinking Violet: When it comes to Kenshi.
- The Stoic
- Super Speed: Her Sacred Mechanoid has two jets on its back that allow her to travel at supersonic speeds, which played a key element in her Big Damn Heroes moment.
- Tsurime Eyes
- Girlish Pigtails
- Goggles Do Nothing: Averted — they act as binoculars.
- Guile Heroine: She makes up for her relative lack of piloting skill with her own inventions, as well as by outhinking her opponents.
- Hair Decorations: She uses alligator clips to hold her pigtails.
- In-Series Nickname: Wahan.
- Mad Scientist: She has a tendency to make excuses to use her inventions to solve her problems (When you have a giant robot, everything starts looking like a nail). Kenshi in particular inspired many improvements to her Mechaworkers by being a guinea pig for previous versions.
- Older Than They Look: Her actual age is 97 due to her being in hibernation at the Barrier Workshop prior to the series.
- Reed Richards Is Useless: Averted — The Mechaworkers changed the face of warfare on Geminar, especially after Emera stole the plans.
- Shout-Out: Her Kikkoujin is an ersatz of the Uchikomas from Ghost in the Shell.
- The Smart Girl
- Wrench Wench: Despite being a Sacred Mechamaster, she loves working on her machinery and inventions.
- You Gotta Have Lavender Hair
Lithia Po Cheena
- Senpai Kouhai: Lapis' mentor/senpai; Morga's junior/kouhai (which Morga won't let her forget when they see each other).
- Student Council President
- Shout-Out: Her last name is a reference to the Pochis, Papacha's henchmen, from Photon.
- Tsundere: Type A
- Absurdly Powerful Student Council: She's one of the Council members.
- Automatic Crossbow: Her ranged weapon of choice in a Sacred Mechanoid.
- Badass Princess: Because of her Dark Elf heritage, she's one of a handful of women who can keep up with Kenshi outside of a Sacred Mechanoid.
- Braids of Action
- Dark-Skinned Blond: Has silver hair that borders on purple in some shots but still counts.
- Luminescent Blush: Begins to sport this midway through the series.
- The Ojou: Princess of Shurifon
- Pointy Ears
- Royals Who Actually Do Something: Doesn't let being a Princess or her position on the Student Council stop her from helping out when she can.
- The Stoic: Most of the time.
- Weaksauce Weakness: Like all of her people, once a day for about an hour Aura loses most of her physical strength while her personality changes to something befitting a Distressed Damsel (This gets used as an excuse for some Rescue Romance Ship Tease with Kenshi, and a few laughs when she returns to normal).
- Boarding School: The Holy Land Academy is one.
- Reasonable Authority Figure: She'll let minor offenses slide but break school property and she'll either make you fix it yourself or worse, send you the bill.
Yeliss, Bwoole, Gryno, and Wreda
Bwoole voiced by: Yukiko Akaike (Japanese), Allison Sumrall (English)
Gryno voiced by: Ayano Ishikawa (Japanese), Ryan Reynolds (English)
Wreda voiced by: Eri Taruta (Japanese), Michelle Rojas (English)
- Those Four Girls
- Big Damn Those Four Girls: In episode 12 when Lan attacks Kenshi's group while they're creating the Tenchi-Ken; they arrive in the nick of time, giving Kenshi enough time to finish the sword and save the day.
- Colourful Theme Naming: Those Four Girls have names loosely based on their hair colors — Yeliss, Bwoole, Gryino, and Wreda.
- Their Sacred Mechanoids are even the same color as their hair color, taking this trope Up to Eleven.
- You Gotta Have Bwoole Hair: All of them.
- Action Girl
- Blade on a Stick: Uses one when piloting a Sacred Mechanoid.
- Rescue Romance: Not exactly "rescue" per se, but she fell in love with Kenshi after he helped recover her hankerchief, which was given to her by her mother.
- Senpai Kouhai: Lithia's devoted junior and Girl Friday.
- Shrinking Violet
- Beta Couple: With Hazuki.
- Morality Pet: Episode 6 establishes its characters' moral bona-fides by their reaction to him trying to meet with Hazuki. Kenshi agrees to keep quiet as soon as he hears, tries to arrange for the pair to escape together, and asks his harem to do the same. The haremettes agree, with various degrees of reluctance, because of Kenshi. Dagmyer, who overheard Ceres explaining to Kenshi, dismisses him as a wuss for not taking what he wants, but keeps quiet. On the other hand, Cordyline is introduced helping smuggle Ceres to his rendezvous, but reveals that she's planning to kidnap and sell him.
- Star-Crossed Lovers: Again, with Hazuki, because of his status as a Sacred Mechamaster. This later becomes defied upon joining the Swan (now under Kwnshi's leadership).
- Unwitting Pawn: To Cliff's plan.
- Big Bad
- Drunk on the Dark Side: Babalun gets a little too exited once he gains control of Gaia during the finale.
- Large Ham: If you think his monologue in episode 8 after the Sacred Mechalord Gaia was revived was enough.
- Red Eyes, Take Warning
- Regent for Life
- Blondes Are Evil
- Char Clone
- Even Evil Has Standards: In episode 11 where he accepted Cliff's heinous plan to lure in (and eventually kill) Kenshi using Ceres as bait with a dangerous reactor strapped to the back of his Sacred Mechanoid. He showed some disgust in the plan, but hesitantly accepted in hopes of it succeeding, even if it means having to kill another Sacred Mechamaster.
- Likes Older Women: Apparently he has a thing going on with Cordyline. It didn't last long.
- Manipulative Bastard
- Overlord Jr.
- The Resenter: He becomes more fearful and resentful of Kenshi as time passes, and it shows.
- Unlucky Childhood Friend: To Chiaia — although she's attracted to him, the rules forbidding male and female Sacred Mechamasters dating freely kept them apart (Ultimately, the problem was Dagmyer's inferiority complex).
- Villain Decay
- Villainous Breakdown: Dagmyer has one spanning most of the series due to growing fear and resentment of Kenshi. It culminates in a Freak Out and complete mental collapse in episode 11 after Kenshi goes berserk in his Sacred Mechanoid, brutally kills one of his comrades, and nearly does the same to Dagmyer, scaring him shitless.
- Villainous Valour: His duel with Kenshi in the final episode is made of this trope. He's still hopelessly outmatched, but he faces his fears head-on and meets defeat with honor.
- Well-Intentioned Extremist: Dagmyer wants to change the status quo because he's sick of being treated like a stud horse. Too bad he's doing this by following Babalun's orders.
- Affably Evil
- Best Served Cold: He has devoted the remainder of his life left before Neizai takes over permanently to destroying Gaia — by serving as his right-hand man until an opportunity presents itself.
- Big Brother Mentor: For both Kenshi and Dagmyer.
- The Consigliere: Right-hand man to Babalun.
- Dragon with an Agenda: Although he's one of the top people in Babalun's conspiracy, it's clear that he has plans of his own.
- Good All Along: While made to look like one of the villains, both Ulyte and Neizai turn out to have always been on Kenshi's side. Both simply had to play along with Babalun in order to stop him.
- Sharing a Body: With Neizai/Rea Second ever since her Heart Drive crystal was implanted in him.
- Soap Opera Disease: Collapsed from weakness in the second episode. Another character to feel the benefits of Kenshi's special health drinks.
- Artificial Human: She is one of three created by the Ancient Civilization to defeat Gaia.
- Brainwashed and Crazy: In episode 8, which turns out to be Babalun's handiwork.
- Breast Expansion: When shifting to her Mexiah persona. Best shown at the end of episode 13.
- Dark Action Girl
- Duel Boss: The only one to fight on par with Kenshi, even when she's in the Sacred Mecha Lord.
- Expy: Of Neju Na Nelmas and D.
- Mental Fusion: In episode 8 after merging with Mexiah.
- Morphic Resonance: Inverted. When shifting to Mexiah, her hair and eye colors switch, among other things
- Put on a Bus: Was pretty much absent after episode 1.
- Really 700 Years Old
- Sharing a Body: With Mexiah, after episode 8.
- Voluntary Shapeshifting: After Mexiah's personailty merged with her, she has the ability to freely shift between her and her Mexiah persona.
- What Is This Feeling?: Asks herself this in episode 8 upon realizing that some remnants of Mexiah's personality are keeping her from killing Kenshi. This later becomes subverted after discovering that he is an artificial human like her.
- Action Girl
- Cool Mask, White Mask of Doom: She even has a mask on her Sacred Mechanoid.
- Enigmatic Minion: She's part of Babalun's faction, but seems to answer only to Ulyte.
- Good All Along: much like Ulyte.
- Ninja: She obeys several of the tropes, especially when she talks to Ulyte from an unseen location.
- Pet the Dog: She seems to have a soft spot for both Kenshi and Emera, and will reward those that help them with useful-if-cryptic information or well-timed assistance from the shadows.
- Spy Catsuit
Cordyline and Lan
- Bare Your Midriff: Lan.
- Dark Action Girl: Both of them.
- Mommy's Little Villain: Lan eagerly follows in her mother's footsteps. Even carrying on without blinking when Cordyline is killed fits.
- Dangerously Genre Savvy: In episode 11 when the Seikishi of the Swan were busy forming Kenshi's BFS out of a compressed mountain. Instead of attacking them at their full health, knowing she and the other bandits will get curb-stomped, Lan simply waits until they are exhausted and reach their operational limits. And she nearly succeeded had it not been for the Holy Land Academy's intervention at the last moment.
- Facial Markings: Cordyline has a marking on her right arm.
- Faux Action Girl: Lan has a tendency to fail when it counts, even excluding when she gets Curbstomped by Kenshi.
- Hot-Blooded Sideburns: Cordyline's hair gives the illusion of them. Subverted since she's not at all Hot-Blooded.
- In Love with Your Carnage: Lan starts flirting with Cliff because she's impressed by his plan to use Ceres to attack Kenshi.
- Killed Off for Real: Cordyline in episode 10, and Lan at the end by Emera.
- Playing Against Type: Rie Kugimiya, known for her Tsundere roles in Shakugan no Shana and The Familiar of Zero, plays the Dark Action Girl Lan.
- Ronin: Cordyline's one of the many Sacred Mechamasters who turned to banditry when they couldn't find a master to serve under.
- Satisfied Street Rat: Lan.
- Smug Snake: Lan again.
- Bodyguard Crush: On Dagmyer.
- Foil: To Chiaia — another basically good, highly skilled Sacred Mechamaster in love with Dagmyer; the main difference between them may ultimately have been who they served.
- Love Martyr: She gets more and more disgusted at the whole hoopla as the series progressed, but stays out of her love to Dagmyer.
- My Master, Right or Wrong
- Subordinate Excuse
GaiaThe strongest Sacred Mechalord created by the Ancient Civilization and the being responsible for its downfall.
- Bigger Bad
- The Man Behind the Man
- Nigh Invulnerable: After he, as Babaulun, merges with the Sacred Mechalord and the Shield of Gaia in episode 13.
- One-Winged Angel: Episode 13, when he transforms the Sacred Mechalord into the "true Gaia".
- Precursor Killer: He's the last and most dangerous of the rebellious Artificial Humans who destroyed the ancient "Senshi" civilization.
Mahya, Angela, and Vanessa
- Bridge Bunnies: Angela and Vanessa also fill this role on the Swan.
- Harem Nanny: Mahya.
- Old Retainer: Mahya.
Rea Second/Neizai One
- Artificial Human
- Dark-Skinned Redhead
- Good All Along: Much like Ulyte and Neizai above.
- The Mole: She reveals that she's actually Neizai during the attack at the Barrier Workshop.
- Name's the Same: To Kenshi's mother, Rea. Also counts as a Continuity Nod.
- Sixth Ranger Traitor
- Sharing a Body: With Ulyte, ever since his father implanted Neizai's Heart Drive/Crystal in him.
- Supernatural Gold Eyes: As one of the ancient Artificial Humans created to defeat Gaia.
- Crouching Moron, Hidden Badass: Not only can she switch from a ditzy hedonist to a formidable political leader (and back) in seconds, she's an old Seikishi ace who's able to pilot a Mechaworker like a pro the first time she gets to see a prototype (to Wahan's shock).
- The Hedonist: Like Mexiah, but taken Up to Eleven.
- Shipper on Deck: Ships Yukine to Kenshi.
- Shotacon: After Kenshi's Happy Ending Massage.
- Badass Beard
- Boisterous Bruiser
- Large Ham
- Shipper on Deck: Ships his daughter to Kenshi.
- Ax-Crazy: And HOW! Not even allies are safe once she gets going.
- The Berserker: Oh YES!
- Blood Knight: She seriously enjoys her battles.
- Purple Eyes
- Shout-Out: Morga's Sacred Mechanoid in the last episode is an ersatz Getter-1, complete with double tomahawks. And she uses it in the appropriate manner, too.
- Student Council President: Before Lithia took over.