Clark Kenting: Subverted: while the only physical difference between Meimi and Saint Tail is that the latter wears her hair in a tail, Saint Tail takes extreme care into not showing her face and acts completely different, to the point that most people who do notice the resemblance ends up believing it's just a coincidence (Asuka jr. went to the point of actually telling Saint Tail she looked like Meimi).
Generation Xerox: Just like her, Meimi's mother used to be a thief chased by Asuka jr.'s father.
Important Haircut: The last part of the last manga chapter and the final episode of the anime show that, eight year after being finally captured by Asuka jr., Meimi has cut her hair short as a symbol that she's not Saint Tail anymore.
Just Like Robin Hood: She stole for herself exactly twice (Ruby and Asuka jr.), and even then she was helping someone (Ruby's owner had just been jailed, and Asuka jr. had been kidnapped).
Love Letter Lunacy: Saint Tail 'warning notes' double as love letters, but Saint Tail can't bring herself to deliver it in a normal way, to the point that, excluding two fakes, the tamest two are a note attached to the spare tire of a passing car and a note brought to him by Ruby (the note hidden in Asuka jr.'s English textbook should have been the tamest one, but Asuka jr. accidentally read it out loud to the class before noticing...).
Amateur Sleuth: Debuted like this, but ended up with formal recognition by the end of the first chapter of the manga and episode of the anime.
Awesomeness by Analysis: After a while he started being able to partially anticipate her and deduce his way out of her tricks.
Bunny-Ears Lawyer: The one reason he comes so close to actually capturing Saint Tail: being relatively unconventional himself, he recovers pretty fast from her over the top acts, and has actually anticipated her a few times.
Missing Mom: What happened to his mother is not known (not even if she's still alive), only that she's not around.
Oblivious to Love: To an unbelievable degree. Being oblivious to Meimi's unexpressed feelings? Understandable. Not realizing that Rina is in love with him when she could be the trope picture of Clingy Jealous Girl? Not so much. Being unable to realize that Saint Tail's warning notes double as unconventional love lettersuntil pointed out by The Dragon? Oh boy... Taking almost two years, shouting them to Saint Tail, and brooding about it for another couple days before realizing he's in love with Meimi? He's threatening Son Goku for the trope picture, guys!
Clingy Jealous Girl: Her main reason to help chasing Saint Tail is because she pegged her as a romantic rival.
Cry Cute: Surprisingly enough, she's capable of this too.
Fair Cop: The final part of the last episode, set a few years after the end of the chase, shows she'll become one.
Huge Schoolgirl: She has the height (she's the second or third-tallest of the class, beaten only by Sawatari and, after his growth spurt, Asuka jr.), and enough self-esteem to become the class' idol upon enrolling and actually transform her height in a charm point.
I Want My Beloved to Be Happy: Her reaction to Meimi and Asuka jr. getting together is to complain it took them so long, and when Asuka disappears she's the one who encourages Meimi.
Rescued from the Scrappy Heap: The Crystal Swan two-parter shows for good she's more than the abrasive and jealous girl with a crush on Asuka jr., and the final chapters have her show genuine niceness to Meimi.
Screw the Rules, I Have Connections!: As the niece of the mayor, Rina got permission to intrude in the Saint Tail investigation. She also used her influence on her uncle to almost get Asuka off the case, and in another occasion tried to get Asuka jr. back on the case (Saint Tail humiliating his replacement and getting her in a fight with Rina was more efficient).
Screw the Rules, I'm Doing What's Right: Has a tendency to punch her way in any situation where there's a crime. In fact her original motivation to chase Saint Tail, before falling for Asuka jr. (and promptly forgotten after seeing him in action and falling for him), was that a thief sending warnings before her capers just made her furious, and Asuka jr. seemed too incompetent to actually deal with her.
Okajima is the mayor of the city of Sakuraoka, who lent Seika's town a crystal sculpture and then had it stolen by Yabe to sell it. Due Rina's attempt at getting Asuka jr. off Saint Tail's case at the same time, they nearly succeeded in interrupting the chase.Tropes related to Okajima and Yabe:
Evil Knockoff: Sort of: Yabe impersonates Saint Tail to commit his theft.
Mind Control: An extremely powerful hypnotist: by showing people some of a shiny powder she identifies as jade dust (even if it's purple and not green), she can briefly take control of the mind of an unaware victim, knock people out until she decides to awaken them, or create such realistic hallucinations they can kill (nearly strangled Saint Tail this way).
Jerkass Has a Point: In her opinion, Asuka jr. and Meimi's relationship was doomed to failure because the latter was hiding something big from him. She's quickly proved right, and it's only because she points out Meimi-as-Saint Tail's Love Letter Lunacy that it doesn't crash down.
Meaningful Name: Her nom de guerre Pandora, as she brings unhappiness (theft through hypnosis, and the involvement in Asuka jr. finding out Saint Tail's identity) with some hope (breaking through Asuka's inability to recognize love).
Mind Control: Of the hypnotic brand, capable of briefly controlling an unaware victim or causing hallucinations with the help of some lavender scent. Still not as good as Rosemary, though.
Nice Job Fixing It, Villain: Had she not called Asuka jr. an idiot for not recognizing an obvious love letter, his relationship with Meimi would have stayed wrecked by The Reveal of her being Saint Tail.
Only Sane Woman: As she's usually seen around Meimi, Asuka jr. and Rosemary, it's a given.