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Big "NO!": Shiro after Joan is burnt at the stake.
Blood-Splattered Innocents: Ikkyu and Florence get covered in blood when the Evil Knockoffs are gunned down in front of them. Ikkyu closes his eyes, but poor Florence has hers open.
Break the Cutie: Hitler is starting to lean towards this after Rasputin and Einstein reveal that the Almighty Dolly and the rituals late at night are, in fact, propaganda they both developed to prove a point in an experiment. Poor guy. Perhaps more alarmingly, he's beginning to show signs of being like his original.
Not to mention all the crap Shiro goes through.
Character Development: Particularly evident with Mozart. Perhaps to the point of Taking A Level In Badass, considering that despite his earlier desire to die, Mozart personally manages to not only receive acknowledgement of his skills from the previous Mozart clone, but in this way keeps from getting shot by him at a time when a good number of previous clones were killing (or attempting to kill) their current counterparts together with themselves.
Dark-Skinned Blond: Director Rockswell looks like one, but it's hard to tell without color.
Erotic Dream: Shiro has one of Marie Curie at the start of chapter 4, he gets rudely and amusingly awakened by Ikyuu.
Expendable Clone: Rockwell takes this view against clones. To the point that he strangles his adopted "daughter" Pandora/younger Marie Curie because he thinks that Shiro doesn't like her. Hell, he even states that watching clones suffer is something he finds arousing.
Evil Knockoff We find out that almost every clone has one in volume 3 and 4. Except for Joan of Arc, whose clone is actually a good person.
The truth is a little more complicated than this, for as we see in volume 5, most of the predecessor clones seem to have been living the same sort of day-to-day student lives that the current are living now (to the best of their abilities, of course, since psychological effects are evident in both groups), before it was...disrupted.
Famous, Famous, Fictional: Played with, in that Shiro may or may not be the clone-son of the scientist who created the other clones, making him yet another clone of an important historical figure, albeit a fictitious one.
Chapter two has Freud and Shiro shoved into the girl's changing room. By Napoleon after the idea was whispered to him by Ikkyu. Fanservice and Hilarity Ensues.
Fantastic Racism: Shiro seems to be the only non-clone who considers the clones to be fundamentally the same as other people. Likewise, some of the clones, particularly Mozart, consider non-clones inferior to themselves because they don't have the DNA of a proven genius.
History Repeats: Something a lot of the clones — particularly Adolf — really, really want to avoid. Played completely straight by Joan and her predecessor clone, who are both burnt at the stake. John F. Kennedy's clone is also assassinated, though Freud notes that the circumstances surrounding the assassination are different.
Shiro's name is written with the characters for "history" and "good". It's not yet certain exactly what it means, but in a series with a lot of characters trying to either force history to repeat itself or prevent it from doing so, it can't be an accident.
St. Kleio Academy is actually named after Clio, the Muse of History.
Mirror Match: Napoleon and Dr. Kamui. Joan's Mirror Match is a good person, Florence Nightingale's is taken care of before she can do much, and Mozart doesn't fight his. Shiro, on the other hand, has lots of them.
The Napoleon: Actually inverted with Napoleon Bonaparte's clone - he's a cheerful, easygoing guy. Shiro also comments that he gets taller every physical exam.
Napoleon Delusion: Played with for many of the characters, being the clones of famous historical people who have varying amounts of acceptance of this. In Volume 8, we meet "Jesus Christ" who is most assuredly not a clone, and Leonardo da Vinci is believed to be suffering from this by passersby when that person is "un-personed" by St. Kleio's secret backer.
Proper Lady: Elizabeth may be a little too forceful to be a textbook example, but all she really wants is to be a housewife and settle down with a husband and family the way the original Virgin Queen never got to.
Replacement Goldfish: The clones, arguably, for their originals. Hinted in a lot of ways with Shiro.
School Festival: a festival is planned to showcase the talents of the clones, and to raise funds.
Apparently the festival's purpose is to help the rich decide which clone they want to buy. What for, we'll just have to see...
School For Scheming: There's definitely something fishy going going on at St. Kleio Academy, especially after Marie Curie "transfers out".
Screw Destiny: The attitude of those of the clones who reject the idea of being bound to the fate of their originals. The Almighty Dolly cult devises a ritual to liberate a clone from his or her original's destiny, involving a symbolic death.