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.
YMMV: Groj Band
Alternate Character Interpretation: Does Trina deserve the things that happen to her for her mean and horribly selfish attitude or is she just a poor girl with issues that the band cruelly exploits.
In "Math of Kon" a completely different side of Trina is shown that makes one wonder which side is the real Trina; the nice(er) mathlete or the mean Alpha Bitch.
"Dreamreaver" implies that Trina locked away the nice side of herself in her mind, and she used to be a real kind and fun person. Her full name was Katrina, but according to Corey "No one's called her that in years." This change seems to have happened after Nick Malory entered her life, making it a case of Love Makes You Evil.
Mina, why does she help Trina so much? Is it beacause she terrified of Trina? In Love with Trina? Is she just as mean as Trina? Does she just enjoy the side benefits of being Trina's friend and is willing to do anything to keep them? Or does she see her as the kind girl she used to be?
Corey himself. As commented by his friends, he has the passion and talent to come up with new lyrics (generally in the "pseudo-An Aesop" end segments), so him blatantly parasitising his sister's diary is either the sign of extreme laziness, deliberate assholish behaviour, being oblivious, or something else.
Awesome Music: Grojband has one awesome song per episode. The background music when Trina goes diary is pretty awesome, bonus points for changing the tune depending on the emotion.
Better Than It Sounds: Both musically and as a show. The show never takes itself very seriously and much of the humor comes from the main characters' awareness of the fact that they're in a cartoon. There's also the bonus of the band's songs being pretty catchy, and not all of them are done in a rock-style (as one may be made to think, given the name).
Cargo Envy: An interesting subversion in "All You Need is Cake". Mina is jealous of Trina's sweater, but Trina is treating the sweater as if it were a person.
Crosses the Line Twice: The flashback showing why Trina is scared of puppets. Trina's just an innocent little girl back then, so it's sad to see her scared...and then it turns out she accidentally picked up a scary puppet that just happened to look exactly like the "pretty puppet" she wanted, and the whole thing crosses the line into hilarious dark comedy.
Ear Worm: The theme song is ridiculously earworm-y. Even if you hate the show, it'll stick in your head for the rest of time.
There's a sizable fan community for Nick/Mina, who ship them because Nick is one of the nicest characters in the show and Mina is a long-suffering woobie, not to mention Nick being out of Trina's reach theoretically could reset her back to her nice former self (and allow her to get with Kon). There's also a surprising number of fanart for them.
That said pretty much everyone ships Laney and Corey, pretty much the vast majority of fan art features these two.
Strangely enough, there seems to be a hefty tumblr community who ship Kon/Trina, mostly thanks to the episode where Trina was showering Kon with affection when she thought he was a dog. It seems like a Crack Pairing at first glance, but Word Of Godclaimsotherwise.
"Funny Aneurysm" Moment: The Song in the episode "In-D Road Rager" titled "Trash, Bash, Burn and Crash" includes the lyrics "You better move and play it safe, cause when you drive out of control you're gonna shake, flip and roll." this episode aired on June, 12th 2013, The same day. NASCAR racer Jason Leffler was killed when his car lost control and crashed during a sprint race.
Growing the Beard: The show, while enjoyable, really started showing how good it can be with the two part Dreamreaver.
It Got Better with "Six Strings of Evil", which includes a killer rock song.
Ho Yay: Corey occasionally has moments with Nick Mallory that seem quite affectionate (for starters, while he is touchy-feely with the other Grojband members, he doesn't freaking support himself on their necks while offering a semi-suggestive facial expression). In episode 8, he sees fit to write a song about a man's ass.
In "On the Air and Out to Sea" Nick was scared of pirates forcing him off the plank, but didn't have a problem with Corey pushing him off the plank a few minutes later.
Jerkass Woobie: Trina may be a jerk, but some viewers feel sorry for her with the band ruining her life just so they can steal song ideas from her diary.
Somewhat averted (subverted?) in "Pox N' Roll", where the scene where she writes in her diary was inspired by happiness from kissing Nick Malory's ear. He turned at the last second, and she had her eyes closed and thought she'd kiss his lips, but she was still overjoyed. It seems the band is using her diary regardless of whether or not she's angry, its just that anger is the emotion Trina feels the most.
Then in "No Strings Attached", the band uses fear, which REALLY pushes Trina to woobieness, but its somewhat deserved.
Sadness is probably the worst, sad music and eyes filled with tears along with a really sad face and instead of writing in fire she writes in storm clouds. It's only mitigated by the fact that in the episode "All you Need is Cake" Trina is being melodramatic over a sweater, one that she gets back immediately after writing the diary entry anyway.
Ultimately, Trina does tend to bring this on herself and there have been episodes where Corey doesn't think to use her diary for lyrics until she instigates something in her vendetta against her brother's band. She's mainly a Jerkass Woobie because we see in flashbacks that she Used to Be a Sweet Kid and even see that sweet kid still alive inside her brain in one episode, so knowing that, it's more difficult to not feel sorry for her even when her suffering is self-inflicted.
Mina isn't your typical jerk, but she seems more than happy to help Trina make her brother and his bands lives miserable. Then take a look at how Trina treats her, and well... it's hard to not feel a little bad for her.
Les Yay: Mina does seem pretty obsessed with Trina, to say the least. However, Trina's always fawning over Nick Mallory , so it may be unrequited. Of course, it's not known whether Mina's just obsessive, scared into submission, or has emotional feelings for Trina.
Trina's stated reason for fearing Mina and Nick Mallory getting together is because she'll end up all alone.
In "Math of Kon" The two spend the day together on what looks a lot like a date, including drinks, a movie and staring at the sky while laying on the grass. During the episode Trina is completely nice to Mina.
In "All You Need is Cake" Mina joins Trina on the tunnel of love ride.
In "Dreamreaver", in Trina's dreams Mina is seen as a puppy who is sleeping atop of Trina's sleeping form. In that same episode, she also commits theft and vandalism to make Trina happy, without Trina ever knowing it was her who did it and not her dream power.
In "Smash Up Turby" Trina commands Mina to give her a compliment, and after Mina compliments her hair, Trina reacts by giving Mina a look akin to bedroom eyes, with a couple of hearts appearing in front of her face.
In "Ahead of Our Own Tone" Mina really wanted to be assimilated into the sparklebrain ruled by Trina.
Nausea Fuel: In "Smash Up Turby" when Trina grabs Mina's tongue and uses it to clean the barf off her face.
The Scrappy: Mayor Mellow. He's usually ignored by the fans.
Some Anvils Need to Be Dropped: Surprisingly. In one episode the band is expected to perform at a vegan restaurant, and Laney angrily makes the distinction that being vegan simply means you don't eat or use products made from animals instead of having to act like a hippy who wears leaves for clothes and doesn't bathe.
Tear Jerker: Seeing the usually optimistic Corey cry in "All You Need is Cake".
In the same episode seeing Trina write in her diary in "Sad Mode".
Seeing Laney cry after Corey yells at her for being right all the time in "One Plant Band".
The Woobie: Mina, she can make some really sad faces when Trina is being mean to her or ignoring her. Overlaps with Jerkass Woobie since Mina is actually willing (VERY willing!) to help Trina in her evil schemes rather than being forced to.