Haruhi Suzumiya (Cure Dio)
Voiced by: Emma Watson (Japanese), Wendee Lee (English)
- Actor Allusion: Wears a red hoodie and light-rinse blue jeans in episode 11 (confirmed to be the episode where she and Kyon find themselves in Closed Space). Think about it...
- Anti-Hero: Type III bordering on Type V at times as of episode 6.
- Buffy Speak: Guilty as charged as of episode 9. "Why did you try to seal your crime scene with this data... manipulating thing you do?"
- Clothes Make the Legend: Never seen without that yellow hair ribbon.
- Donna Swears-A-Lot: She really likes to say "shit" a bit too much. Also, she curses up a storm when doing her best R. Lee Ermey impersonation in episode 12.
- Drill Sergeant Nasty: Starts out as this during the baseball game in episode 12.
- Fangirl: Of Ronnie James Dio.
- Flipping the Bird: Does this to Taniguchi in episode 2.
- Frickin' Laser Beams: Notably, she's the only Cure to be able to fire them outright; she also has a finishing move based around this trope.
- God-Mode Sue: Parodied Up to Eleven; she participates in all Cure fights (and yes, including Yuki's altercation with Ryoko).
- Iron Butt Monkey: While nowhere near Kyon's Butt-Monkey levels, she does get injured more often than the other Cures (Kyon included).
- Meaningful Name: Her Cure name is Cure Dio; this can be interpreted as either a symbol of her fangirlism of Ronnie James Dio, or the fact that some consider her to be God.
- Modesty Shorts: Worn with her school uniform and a few other outfits, including, oddly enough, under her Playboy Bunny outfit. Lampshaded a few times in-series.Haruhi: Sorry to disappoint.
- Obfuscating Disability: Most everyone, herself included, believes her to be a high-functioning autistic; however, the truth is quite unbelievable (not that Haruhi ever learns who—or what—she really is).
- The Other Darrin: Though considering recent events involving Aya Hirano, this may be Justified (never mind that her author-chosen successor is Caucasian)...
- Playboy Bunny: She has her moments.
- Precision F-Strike: Has a few throughout the story, but her most notable thus far is in episode 5: "Then I'll tell everyone at school that all you geeks ganged up on her and fucked her!"
- Inverted by her Drill Sergeant Nasty impersonation; when she stops using the F word and other strong profanity in her dialogue, you know the SOS Brigade's about to be eliminated from a baseball tournament in the very first round if they don't shape up real soon.
- Screw the Rules, I Make Them!: Says this word-for-word in episode 8.
- Seven Dirty Words: Almost; while she does call Taniguchi a motherfucker in episode 9, the latter drowns her out. In a straighter example, she has a tendency to say the most functional word in the English language, "shit", from time to time.
- Shout-Out: In episode 8, she paraphrases a line spoken by the most famous Magical Girl of the '90s: "Hey, you were looking up Mikuru's skirt! You pervert!" Even funnier, the offending mascot says the exact same thing each time.
- Sound-Effect Bleep: Her Drill Sergeant Nasty vernacular has this scattered throughout.
- Tempting Fate: Does this a few times, most notably when she blurts out that with her Modesty Shorts she'd have a harder time getting chewed out than would Mikuru during the Playboy Bunny scene in episode 5. Guess who got in trouble?
- This Is for Emphasis, Bitch!: Played straight a couple of times in an early scene in episode 4; played with right before she issues the bullies around her a Curb-Stomp Battle from skills she had acquired from her club-hopping in episode 1 in the same scene:Haruhi: Correction: prepare to be amazed, sons of bitches. That said... [cue the Funny Bruce Lee Noises as Haruhi gives the bully posse hell]
- She also says "All right, bitches!" right after scoring a double against the Kamigahara Pirates.
- Tights Under Shorts: Wears red tights under her cuffed jean shorts (which are themselves a Flanderized carryover from such anime episodes as "Bamboo Leaf Rhapsody" and "Remote Island Syndrome Part 2") when it isn't summer.
- Tomboy to Yuki and Mikuru's Girly Girls: Also the tomboy to Tsuruya's girly girl.
- What the Hell, Hero?: Gets a couple of lectures from EVO for her antics in episode 5.
- Who Wears Short Shorts?: Flanderized as a staple of her casualwear. Also part of her Cure Dio costume.
- Zettai Ryouiki: Varying grades with her school uniform and confirmed Grade A as Cure Dio.
Kiyohiko "Kyon" Tanigawa (Cure Chiave)
Voiced by: Tomokazu Sugita (Japanese), Crispin Freeman (English)
- Anti-Hero: Type I.
- Deadpan Snarker
- Dragged into Drag: In episode 11, courtesy of a Gilligan Cut, as The Joker (specifically, in his nurse disguise from The Dark Knight).
- Early-Bird Cameo: In episode 1. His name isn't revealed until episode 2, but judging from the source material it's clearly him.
- James Bondage: During the Asakura incident.
- Manly Man to Itsuki's Sensitive Guy
- Throw the Dog a Bone: Even his luck has its OOC moments.
- Word of Dante: Or at least an amalgamation thereof, his name being an cross between two assumptions of his names (Kiyohiko, from one source, and Nagaru Tanigawa, from another source— which, incidentally, is not by any means Word of God).
Yuki Nagato (Cure Extraterrestre)
Voiced by: Minori Chihara (Japanese), Michelle Ruff (English)
- Bifauxnen: Not exactly; it's implied that Cure Extraterrestre does get mistaken for a boy by the others due to that flat chest of hers being highlighted, but the narrator knows better. Then she removes her mask...
- Foreshadowing: Kyon notices a vague connection between Yuki's voice and Cure Extraterrestre's voice at the start of episode 7 when Yuki tells him to read The Martian Chronicles that night (and it definitely isn't the extreme monotone voice she'd usually use in her civilian form).
- Meganekko: Until the altercation with Ryoko Asakura.
- Not So Stoic: A slightly obvious example in episode 6 when Haruhi declares it the SOS Brigade's mission to mingle with aliens, time travelers, and ESPers.
- Teh Rei
- Samus Is a Girl: Subverted; while the narrator refers to Cure Extraterrestre using feminine pronouns, the characters only learn her true gender when Ryoko Asakura accidentally lets slip that under that helmet is the face of a girl.
- Sophisticated as Hell: Sometimes delivers Totally Radical dialogue in the midst of all her technical and otherwise sophisticated wordings, always while retaining her deadpan. For example, from episode 3:Yuki: Go ahead. But please, whatever you do in here, let me read. Number one, this is the Literature Clubroom, what did you expect? And number two, I like to read.
- The Stoic
- Tomboy and Girly Girl: The girly girl to Haruhi's tomboy and the tomboy to Mikuru's girly girl.
- Tron Lines: As Cure Extraterrestre.
- Unsettling Gender Reveal: She does this to both Haruhi and Kyon (Haruhi was less surprised to learn Cure Extraterrestre's true gender than Kyon was), but Ryoko knew all along.
- Unitard Of Power: With Tron Lines, even!
- Zettai Ryouiki: Done with thigh-high boots over her Tron-style jumpsuit as Cure Extraterrestre.
Mikuru Asahina (Cure Tempo)
Voiced by: Yuko Goto (Japanese), Stephanie Sheh (English)
- Girly Girl to Haruhi and Yuki's Tomboys: Also the girly girl to Tsuruya's tomboy.
- Mini Dress Of Power: Notably, she's the only Cure to wear one in this series.
- Pimped-Out Dress: As Cure Tempo. It's also part of her formalwear.
- Playboy Bunny
- Proper Tights with a Skirt: Wears this most of the time; strangely she only wears this with her uniform in the winter, and her Cure costume doesn't feature tights at all.