Acceptable Targets: People with red hair; Kasimar thinks so anyway. Lavender can, and will, fight back.
Overweight people in Chris's point of view: he singles out Hector a few times.
Twilight is probably the most spat-upon thing in the series.
In fact, like stated on the main page, a lot of the author's likes/dislikes are shared by the cast.
Alternative Character Interpretation: Word of God says that Kim's lack of backstory was because he wanted the reader to draw their own conclusions over how she became who she is now. Later retconned as Kim's backstory was revealed in a bonus chapter.
Arc Fatigue: The huge number of subplots in Letterama (Carlton's desire to be more confident, Nakia's final stretches into insanity, the impending Rheneas vs Barrington duel, the alliance war between Opal and Lankston and Lankston's Heel–Face Turn are the big ones) cause the plot to drag on.
Badass Decay: In Letter Starz, Quarla fears this is happening to her after failing to scare Jimmy into submission.
Definitely happens with Rheneas in Letter Starz. He comes off more as a little kid trying to be Rheneas than as the actual Rheneas.
A lot of what Kasimar and Nakia say/do can be considered this.
Draco in Leather Pants: Certainly applies to Nakia and Kim for some readers, who have written Letterz fanfiction of their own presenting them in a more positive light.
Elimination Houdini: It's likely that when every new elimination chapter is posted you'll be wishfully thinking this is FINALLY the episode where Kasimar gets voted off ... instead it's somebody else (possible a fan favorite) and you're left thinking, 'why won't this hellion justlosealready?'
This is lampshaded somewhat during his elimination, where the audience is led to believe that Eleanor would end up being eliminated instead. Thankfully, Jimmy would not allow it.
Rheneas and Lankston post-merge in Letterama. Partially due to Lankston's plans and Rheneas' immunity wins, and partially because Opal continually screwing up with her strategy.
Uzuri in Letter Starz, despite being weak and not contributing to the overall story, has dodged elimination twice thus far.
Ensemble Darkhorse: Xaria. To the point where the author actually had her go farther in the story than originally planned.
Barney. He is to this day the most loved character in the story.
Of the newcomers, Rheneas and Winnie seem to be the most loved.
Evil Is Cool: Tabitha and Lankston aren't exactly evil, but they sure pull off some dark moves like bosses. Perhaps Kim too, although some of her moves go too far and most of her moves are accompanied by racial slurs, which aren't exactly cool, obviously.
Foe Yay: Oscar and Lavender are a bit obsessed with getting rid of Kasimar. For what it's worth, Kasimar has a similar obsession with getting under their skin. He even flirts with Lavender a few times. And don't get me started with Spider and Nakia...
There's also Kim's obsession with Sasha...
Alice and Bishop, to the point where other contestants claim to ship them.
Fridge Horror: Don't think too hard about some of the things Kasimar says. Seriously.
Also Zita's fear challenge. Staying in a burning building. If the flames didn't kill her then she'd have been eliminated and in hospital because of smoke inhalation; it could have given her problems for life. At least she lived.
And Kasimar saying he wouldn't mind being alone with Quana; considering his personality it couldn't be anything good. Creepy.
Ho Yay: Andy and Barney, Carlton and Wallace, Lankston and Rheneas, Paul and Yannis.
Female examples: Lavender and Tabitha, the author even planned for Lavender to have a crush on her in some early drafts. Vayvay and Winnie, but that's more joking than teasing.
Humor Dissonance: In-universe, Jimmy's jokes cause listeners to go into hysterics. To the reader though... not so much.
Jerkass Woobie: Arguably, Kim. She went through a MASSIVE Humiliation Conga, got disowned by her parents (who she appears to have loved), makes a final speech that sounded like she was in some pretty DAMN serious despair, an is put in juvenile hall instead of arriving in the finale on Kim's own accord. To add insult to injury, the only ones who actually feel bad for Kim are Imanda, Jimmy, and after some anger, Rheneas and Vayvay, and those two sounded more curious than sad.
Letter Starz invokes this by having some characters ponder if things would have turned out better for Kasimar, Kim, and Nakia had they been given the same sympathy Tabitha received in Letterama. It also portrays Alice and Daisy in a much more sympathetic light than before.
Tabitha managed to manipulate her team into cannibalizing itself pre-merge all the while playing the role of the leader, and made sure to eliminate anyone who learned of her true nature like Andy and Hector. Her post-merge strategy was to keep Kasimar and Nakia immune via exploiting Chris' loopholes, forcing everyone to turn on each other, and no matter who went home, it put herself, Nakia and Kasimar one step closer in the game. Later on, she drops Nakia and loses Kasimar, but it fails to deter her as she plays on Jimmy's emotions to get him to vote himself off, and gets rid of Lavender. The only reason she ended up losing was because of her Engineered Public Confession via Chris.
Kim is what you get when you mix Kasimar's sadism with Tabitha's intelligence. Rather than wait for everyone to vote each other off, she takes the initiative and discreetly eliminates several contestants, like Max and Tyson. She also uses sex to convince Kasimar to find the immunity idol. Her main plan was to manipulate Eddie into dating her, then tell him the truth right at the finale to demoralize him. Her plan was derailed by Yannis performing an Engineered Public Confession and Lankston tricking her into giving up her idol.
Moe: Raven. However she's now past the point of being a moe and no longer stutters.
Other examples are Winnie, Uzuri, Vay Vay, Eleanor and Sasha.