Adorkable: Pickle with his nasal-voice and naive nature.
Awesome Music: The series makes extensive usage of at least two musical numbers within a single episode, either performed by offscreen singers or (most of the time) by actual cast members. They always pack a punch despite being confined to around 60 seconds.
Base-Breaking Character: Crusher is either incredibly enjoyed due to his Large Ham behavior or incredibly disliked for the fact he constantly doesn't see his cheating ways lead to him failing every time. Special mention to his Manchild cries whenever he loses.
Crusher is known to be a cheater, but since Blaze wins by passing him with his Blazing Speed, wouldn't that be cheating, too?
And probably the most disturbing of all: In the episode, "The Blaze Family", we are introduced to Blaze's parents and sister, which raises the following question: How do the monster machines reproduce?!
Jerkass Woobie: Crusher. Just about everything in this show - from the animals to even his own gadgets - seems to be out to get him. Though to be fair, considering he's a childish cheater who never learns his lesson and has a massive ego that constantly lands him in many situations, he does deserve most of this.
Memetic Mutation: The infamous "Call Blaze and the Monster Machines" app on the Google Storenote An unauthorized reskin of a tie-in for Goosebumps 2: Haunted Halloween, where the film's antagonist would call the user and threaten them with a knife. that scared kids became a meme in the fandom.
Most Wonderful Sound: The sound of Blaze's Blazing Speed being deployed and put to use. Also the rock theme that plays whenever he uses it.
Older Than the Demographic: The show is primarily aimed at kids under 7, but the protagonist Blaze acts and sounds like an adult.
Almost every time there's an event at the Monster Dome, the music plays a beat akin to the backing rhythm to Queen's "We Will Rock You".
The song "Get to Work!" from "The Super-Size Prize" features a similar melody and music style to "Uptown Funk".
"Addition" is to the tune of "I'm Free (Heaven Helps The Man)" from Footloose.
The animals' Welcoming Song in "Animal Island" appears to be inspired by songs from various animal themed Disney films, specifically "I Just Can't Wait To Be King" from The Lion King (1994), and "The Bear Necessities" and "I Wanna Be Like You" from The Jungle Book (1967).
Said song is also to the tune of "Henry's Underwater Big Band" by The Wiggles.
They Changed It, Now It Sucks!: Some viewers didn't like a number of the changes after the mid-season 3 Art Evolution, such as having AJ describe the STEM concept instead of Blaze, a digital diagram of AJ's description appearing on his watch or Blaze's control panel instead of skywriting it, and not using his Visor View to see something faraway, instead having the camera panning to whatever is being spotted when he says it.
Although Blaze's friends get a lot of attention, their appearances gradually became fewer with each new season, almost as if they became Out of Focus. None of them even get a chance to sing a full song in the series (aside from a few brief moments in the first season).
Starla is suffering this the worse. She's appeared the fewest out of the main characters, only appearing no more than 5-6 times after season 1. She's also had the longest absence streak with a grand total of 14 absences, between "Toucan Do It!" in Season 3 to "Robots to the Rescue" in Season 4. This is probably because Kate Higgins had a lot of other shows to work with at the time.
As a matter of fact, the fourth season contains the longest consecutive set of episodes that only feature Blaze, AJ, Crusher and Pickle — five in a row from "Officer Blaze" to "Blaze and the Magic Genie". It appears that said quartet of main characters have became the "official" set of main characters for the rest of the show's run, and the others have been demoted to recurring roles.
Watts was built up as Blaze's new Monster Machine friend, but she appeared very little in the fourth season, only four out of twenty episodes. Possibly because Melanie Minichino had a lot of work as the female announcer for Disney Junior, as well as her roles as Anya and Ava.
Pickle's family gets to appear in "The Pickle Family Campout", but out of all of them, his parents are not any of them. This episode would've been a good time to finally show someone's parents (as no one has had parents seen or mentioned throughout the show), but noooo.
Although, Blaze did have his parents (along with his little sister, Sparkle) appear in a later episode, "The Blaze Family".
Crusher suffers this up to eleven in "Toy Trouble!", having no more than two minutes throughout the episode's main story, with the only purpose to cause the conflict. To top it off, Blaze and his friends were unaware of his presence, and never found out he was the one who made the giant toys. They also don't bother to give him one of the toys after they shrunk them and all was taken care of.
They Wasted a Perfectly Good Plot: The Monster Machines competing in a night race in "The Midnight Mile" would've been a good time for them to use their speed lights again (having received them in "Light Riders"). Instead, they race on a lit track with no lights on them at all, and thus, the speed lights have became Forgotten Phlebotinum all together.
