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.
Base Breaker: Fans are divided on Almond; she receives the lion's share of the focus over the ostensible protagonist Cucumber, while being hypercompetent and even her mistakes turn out for the best. Some find her a boring character because of this, while others argue that part of the story is subverting conventional hero roles and she's fulfilling Cucumber's role as the legendary hero.
The Disaster Masters, in particular, seem to gain an instant following the moment they show up; the flamboyantly colorful Noisemaster had multiple pieces of fan-art within just a day of his appearance.
Peridot seems to be everyone's favorite. When Gigi decided to give out painting requests to her top three Kickstarter donators they were all Peridot.
Foe Yay: Peridot's obsession with beating Almond, especially when combined with her Tsundere attitude and Almond's playful teasing.
Almond: You just can't stay away, huh? Peridot: Shuh- SHUT UP!!
Genius Bonus: Princess Piano is named not just for the instrument but also for the musical term which indicates playing softly—it is, of course, an Ironic Name.
Played with. There are several points in the story so far where a more logical and reasonable choice could have saved everyone a lot of trouble, but they never do it because it's simply not how these things work. It usually runs on Rule of Funny.
The entire plot kick starts because the people in charge of hiding the Plot Coupons are really, really bad at it.
Perfectly summed up here:
The Oracle: I don't have time to spend interrogating every "Legendary Hero" who walks in here! Cucumber: But—But that's just stupid!
Jerkass Woobie: Even though Splashmaster is... well, Splashmaster, it's easy to feel bad for him when he's challenged to a game he doesn't understand and is physically incapable of participating in.
Viewer Gender Confusion: Cosmo. Possibly. Assumed to be male, but there really isn't an indication of Cosmo's true gender. No one in the comic has actually used the word "he" or "she" yet. For her part, Gigi is intentionally keeping Cosmo's gender vague.