These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
And of course Carlos Pena and Alexa Vega, who were already engaged when she appeared in the finale and later married.
James Maslow and Victoria Justice from Victorious is pretty popular too.
Angst? What Angst?: Logan in Big Time Girlfriends. He certainly forgives James & Camille for accidentally kissing quickly, but that may be a by-product of the storyline having to split time with Kendall & Jo's relationship issues and Carlos & his girlfriend.
Happened again at the 2013 Kids' Choice Awards. Carlos Pena was nominated for "Best Male TV Actor", and the band was nominated for "Favorite Music Group". Neither won in their respective category.
From the beginning, it was very obvious that the band itself had almost no chance of winning "Favorite Music Group," because they were up against the juggernaut that is One Direction. Rushers actually had a big lead in the Twitter voting, but unsurprisingly, 1D came out on top. While many Rushers thought that 1D beat them by the skin of their teeth, it was later reported that One Direction got 63% of the vote, meaning that BTR could not have pulled off any more than 37%; and, at the very minimum, 1D had nearly twice as many votes as BTR.
Carlos's loss for "Favorite Television Actor," on the other hand, was much more of an upset, considering the fact that the winner, Ross Lynch from Austin & Ally, isn't that big of an idol.
The 2014 KCAs. BTR wasn't nominated for anything. Way to go, Nick, leaving your own band off of Favorite Music Group. 1D and Ross were nominated again for their respective awards, and while the former is pretty much a lock to win their category, the latter will have to fight off Jake Short.
Cargo Ship: James/Palm Tree, turns into Random Girl/James/Palm Tree.
'Stay In Our PJ's'. That thing is going to be around for a while.
Ensemble Darkhorse: Mercedes. She's a Rich Bitch (see below) who makes the boys her boyfriends and do what she says because she "loves manipulating people" and is a Clingy Jealous Girl (see above) at times...but she's so hilarious that everyone wants her to make another appearance.
And, admittedly, gaining a large following in a short amount of time. Now considered one of the 'main' ships.
All of the ships have large fanbases, but the title of most popular (as in, THE fan preferred couple) seems to fall between Kendall/Logan or Kendall/James.
Foe Yay Shipping: Between Kendall Knight and Jett Stetson, especially after Green Time Rush.
Fridge Brilliance: Why was Kendall the only one of the band not to suffer from "Hollywood Fever"? Because his family moved to L.A. with him.
Why was Wayne Wayne so determined that Kendall would be kicked out of the band in Big Time Bad Boy? Because he was already the group's bad boy - Notice that when the guys are told that one of them has to be the bad boy, Kendall was the only one not willing to take the role. He's the bad boy, but not in same way the cartoonish Wayne Wayne was.
Harsher in Hindsight: James spends most of Big Time Dance helping Logan try & ask Camille to the dance. Then came Big Time Girlfriends, where James & Camille kiss despite her now being in a relationship with Logan. What the hell, James?
To be fair, the kiss in Girlfriends was blatantly played as a consequence of getting too far into character and literally forgetting for a moment that they weren't a Hair-Model Spy and a Robot Princess who had fallen in love. "There was a bomb."
Moral Event Horizon: Hawk crosses this in "Big Time Superheroes" when he not only steals Gustavo's hard drive which holds BTR's second album, but then tricks the police into thinking Gustavo stole it, and not the other way around, which gets him, Kelly and the boys arrested.
Jett Stenson also does this in "Big Time Sneakers" when he attempts to make a fake relationship with Jo public, even knowing that she is already dating Kendall. He also has Jo's publicist support the decision, claiming that fans will take his side as he has a bigger fanbase.
Narm Charm: Part of the series' appeal is how over-the-top everything is.
One True Threesome: The most popular pairing is all four of the main boys, James/Logan/Kendall/Carlos, but you'll find pretty much any threesome combination if you look hard enough, sometimes even with one of the girls thrown in.
Romantic Plot Tumor: It's hard to believe the show's supposed to be about four guys from Minnesota trying to make it in the music business and not about them chasing girls constantly.
Ron the Death Eater: Jo to much of the fanbase; whether you consider her a lovable character or not, canon has never placed her in a villainous role, but a wide variety of fanfiction portrays her as manipulative, cheating, verbally abusive, and even homophobic in the right context.
The performance of "Till I Forget About You" from "Welcome Back Big Time": Kendall is out their singing this song about how he's given up hope of ever repairing his relationship with Jo. Fortunately, it ends on a Crowning Moment of Heartwarming.
Wimpification: In the majority of fics, Logan is frantic, uptight and skeptic with goodreason, but typically he's portrayed as a whiny wimp who reluctantly gives in (sometimes very reluctantly). The others are susceptible to this as well. There's a sorting algorithm of dominance which almost directly correlates to height; Kendall tops James tops Carlos tops Logan (results may vary). Kendall can even retain some of his natural seme qualities while biting pillows.
His freakouts go between being a Crowning Moment of Funny and cementing his The Woobie status. Bonus points for his freakout in Big Time Mansion, which ends with him fainting in terror.
And the way he jumps into Kendall's arms a la Scooby-Doo when frightened in "Big Time Crib."
James in the pilot, but only when the boys are telling Kendall's mom why they were arrested.
James: And now I'm sad.
Big Time Terror features the revelation that Gustavo wasn't allowed to act like a kid when he was a child, and his mother forced him to practice playing the piano instead of playing games with other kids his age. Partially averted, in that when Kendall says that he feels bad, Kelly immediately tells him not to.