Anvilicious: In the "Trouble With Frittles" episode that took place right near the Presidential election, the town was fighting over which Frittles were better, Blue or Red. There was even a vote to decide which ones were the best. A thinly-veiled Aesop dealt with blue and red fans getting along.
Anti-Climax Boss: The Toddler is defeated by being pushed into a bottomless pit and his explosive bottle is thrown down after him.
Big-Lipped Alligator Moment: Near the start of the episode "Cave In", an elderly man enters the shop asking if anyone has seen a newspaper with several thousand dollars rolled up in it. Henry and Charlotte say they haven't and the man leaves in worry. Other than a "Who reads newspapers" comment from Henry, nothing is made of this at all after the fact.
The whole first scene was full of allusions to It's a Wonderful Life (with a pretty decent Jimmy Stewart impression when Ray yells at the little girl trying out the piano) including this man who was clearly a reference to Uncle Billy who lost money in this manner in the film.
Casting Gag: Having Ray be a fan of the red Frittles in the obligatory election episode is incredibly funny, considering that Cooper Barnes is a staunch progressive.
Crack Pairing: Although most people ship Henry and Charlotte, a few people ship Henry and Ray.
Discussed and Defied in the pilot, when Henry contemplates going to Jasper's (his friend) birthday party, while there is a supervillian threatening the city. Captain Man gives Henry a stealth What the Hell, Hero? speech before Henry decides to help. However, later seasons have him (together with Captain Man, discussed below) do rather amoral things that aren't always called out by the story, such as wiping people's memory to fix a problem that he caused.
Captain Man, with his status as one constantly played for laughs. In the Season 2 finale, Captain Man wants Henry to wipe Jasper's mind, leaving no trace whatsoever. Henry decides not to, but happily wipes a stranger's mind with the same ray! Captain Man suggests killing Charlotte when she finds out his identity, even if this is played to be comedic. He refuses to tell Henry about his legally mandated vacation days, refuses to let him out of school to take a standardized test, and actively helped villains at one point.
Evil Is Sexy: Gwen from "Love Muffin" and other female villains.
While it's true that the two are really close and affectionate with each other, they've shown on multiple occasions that they're strictly Platonic Life-Partners, or could even be compared to Like Brother and Sister, and find the idea of dating each other disgusting. See The Bucket Trap for reference.
Fridge Brilliance: The Spoiler's crime of spoiling movies and TV Shows seems more annoying than worthy of jail time (until he tried to break Kid Danger's arm), but think about how he had to get that information. While there are legal ways to get spoilers, it's most likely the guy is a hacker, which is worthy of being arrested.
Their looks aren't that uncommon nor are their names. Given how little the characters notice in general, they probably brush it off as a coincidence.
Genius Bonus: In the pilot, during Ray's superhero origin about being zapped by an experimental beam, his father exclaims "Thank Jeepers!" when Ray turns out to be fine. The term Jeepers Creepers is a Gosh Darnit To Heck way of saying Jesus Christ.
Hilarious in Hindsight: The premise of Captain Man disguising himself as a substitute teacher in the first season episode Substitute Teacher becomes what the unscripted Nickelodeon hidden camera series The Substitute is about. And Jace Norman was the first celebrity to partake. Cooper Barnes himself is the celebrity for the eleventh episode.
In "Ox Pox", the elderly version of Ray says "Schwoz, youre a man again", implying that Schwoz's future self is a transgender woman, which becomes either this or Heartwarming in Hindsight, when you consider that Schwoz's actor Michael D. Cohen came out as a transgender man in a 2019 interview with Time Magazine, along with confirming that he transitioned twenty years prior in addition to the fact that Julie Rei Goldstein, the actress who played his android girlfriend Gerta, is a transgender woman herself.
Hollywood Homely: When Captain Man uses pictures of his cousin Elliot to show the effects of the machine to make people manlier, Charlotte thinks that he looks ugly in the picture displaying him from before he became a beast (even mistaking it as the one showing the bad side effects), but he looked half decent with an awkward smile as his only real issue.
Ho Yay: Henry and Ray have shown signs of adoration a few times in the series. A couple of fans even created a fan shipping name for them called HenRay.
A sign of this is shown in Indestructible Henry. When Ray accidently hit Henry with a cannon and he thought he was dead. He showed serious regret for what he did, and actually cried over Henry at one point. It's one of the few times he's ever shown his soft side. Don't worry, Henry was okay.
Also in the same episode, when Henry cues Ray to punch him one last time "in case it was the last time. But, Ray misunderstands and kisses Henry on the cheek instead. It's meant to be Played for Laughs but still it's a sign Ray is really into Henry, and not just as a friend.
Jasper and Henry anyone??? In the later seasons they act like two boys in a casual relationship and the actors friendship in real life is adorable, which just adds to the ship.
Sidney and Oliver and almost never shown separately on the show, plus they've shown several attractive moments with each other.
Jerkass Woobie: Despite her over the top brattiness, you can't help but feel sorry for Piper in "Spoiler Alert". She really wants to join the Captain Man Club due to her love of Kid Danger, but the club president won't let her even after Piper passes the initiation ritual by eating hair soup and even demands that she take a selfie with Captain Man, despite the odds of that being possible. The club president is a huge Jerkass; even if Piper so much as says hi to her, to the point where even Henry, Charlotte, and Ray are disgusted by this. What makes it worse is that it's one of the few times we see Piper being sad and vulnerable instead of her typical shrill and mean demeanor.
The same applies for "JAM Session" when Piper finds out her friends ditched her for a big ski trip because of her over the top temper, and despite making a serious effort to change throughout the episode, Captain Man repeatedly crushes her dreams just to win a bet.
Ray Manchester/Captain Man qualifies as well. When he got his powers, his father took him out of school, and trained him to be a superhero, causing Ray to miss on regular childhood fun, as revealed in "Caved In". Pretty tragic, right?
Like You Would Really Do It: The Secret Gets Out: There's no way Henry was actually going to stay fired from his job- especially in the first few episodes. To no one's surprise, Henry got rehired and Charlotte was allow to work with him.
Moment of Awesome: In The Time Jerker when Henry gets sent back to the past, he predicts the hornets fly out of the nest, and fly at him. So what does he do? He shoots each and every one of them with his Wiz-Watch.
Captain Man/Ray Manchester doesn't know how to spell, so he has to figure out how to spell on his own. Luckily in the final round, he managed get get the most of the letters right without cheating. Then, he thought about Charlotte's 3-year spelling bee winning streak and how much it meant to her. So he, intentionally spelled the last letter of the word incorrectly, so Charlotte could keep her streak alive. She deserved to win more the Ray, he knew he would lose the bet, but he did it anyway. Now that was heroic.
The Toddler from the pilot preforms an experiment on a baby, turning it into a mutant monster (without any implication that the affects of the experiment were or could be REVERSED in any way later on), and was planning to do the same to the whole city. It's kind of understandable that they chose to kill him off. Except, they didn't.
The Spoiler from the titular episode was just a jerk who spoiled movies and TV shows for everyone, but he quickly decides to simply break Henry's arm in front of the theatre's audience, simply to ruin the movie for them.
Jasper's girlfriend, Courtney attempting to knock a ceiling fan over Charlotte's head. She later chases Charlotte and Henry with what looks to be a miniature chainsaw.
Narm Charm: Things like the Toddler and other themed villains for some, seeing they make the show feel like a Genre Throwback.
Noodle People: Based on what Goomer mentioned, it sounds as though Frankini is Cat's brother whom she is always referring to in Series/Victorious
You'll be hard pressed to find anyone who likes Vice Mayor Willard. In "Budget Cuts", he cut 90% of the heroes' budget just so he could have a monorail, which would take 40 years to build. He's also shown to be a Dirty Coward when dropped off an atomic bomb to the Man Cave just to save his on skin.
Some Anvils Need to Be Dropped: "Henry & the Woodpeckers" teaches that trying to keep kids from recognizing failure and removing anything that might make kids feel bad could do more harm than good and that sometimes failure is necessary to help people grow. This a concept society is losing grasp of more and more.
Tear Jerker: In Elevator Kiss, Charlotte most likely looks sad and surprised when Bianca doesn't want to kiss Kid Danger. There is speculation that she could be in love with Henry, and if you think about it, it's a little depressing.
In Indestructible Henry, Part 2, Henry actually looks dead after he is shot with a cannon. What really sells it is Ray's reaction since he believes that he had accidentally killed Henry since he doesn't know what the audience knows; Henry is indestructible and recovers a moment later.
In Hour of Power, Part 2, after being defeated and publicly humiliated by Drex, a former sidekick of Captain Man, Henry quits his job as Kid Danger
Captain Man: Oh, come on, Henry, you can't just go home now that this town needs you most.
Henry: This town needs a superhero, or at least a decent sidekick who has skills, or... who has anything. I'm nothing.
In JAM Session, when Piper starts crying after her friends tell her that they don't want to hang with her anymore due to her yelling and screaming whenever something doesn't go her way via phone call, believing that they don't like her anymore. Doubles as Heartwarming when Henry and her mom tell her that they do like her, but they just don't want to hang out with her because of her anger issues.
In the fourth to last episode it's revealed that because Henry has been doing hero work with Ray, he's essentially missed so much school and all his friends are graduating without him. Henry is devastated as he has essentially sacrificed his future being a sidekick. When Ray tells Henry not to worry and that he will have a future as the new Captain Man when he retires, that's the last straw for Henry. He takes off the costume and tells Ray that he quits.
They Wasted a Perfectly Good Plot: Let's be honest, how many of you actually wanted the heroes to reveal their identities to Swellview, at the end of Live And Dangerous. That would have been an amazing plot. Oh well, so much for that.
One episode has a newcomer show up at Henry's school, asking strange questions and saying "his father has a surprise for Captain Man". Rightfully suspicious, Henry brings this up to Captain Man who looks through his file of villains. They both deduce that the new student is the son of a recently released enemy of Captain Man. How? Because the student and the bad guy both have the same type of hair. That's it. No more searching, they immediately come up with a plot to capture the kid's father. No surprise, the kid and his father aren't bad guys. His father makes buildings and was creating a special nursing home for when Captain Man retired.
In "I Know Your Secret", Jasper tells Henry he knows his secret. Henry immediately tells him everything about being Kid Danger. Unsurprisingly, the secret had nothing to do with him being Kid Danger.
What makes this even more crazy is that this is how Ray tricked Jasper into revealing the secret Charlotte and Henry told him in "The Bucket Trap".
Near the end of Love Muffin, Henry and Ray have Gwen cornered and prepare to arrest her, but she beckons to reveal their secret by texting it to everyone with her phone unless they let her go. They decide to let her go, rather than Take a Third Option and destroy her phone.
Ray can fight crime on a regular basis, but he can't a spell even the simplest words! This is used against him when he has to compete against Dr. Minyak in the spelling bee, forcing him to prevent Dr. Minyak from cheating, so he could cheat. Oh yeah, that's so heroic!
Ray continuing to repeatedly set off the Bigfoot traps after he after he discovered them, just so he could grab the items and look cool in "My Dinner with Bigfoot".
In "Broken Armed & Dangerous", Henry has a surefire way to ensure people wouldn't figure out he was Kid Danger thanks to Charlotte. He ends up forgoing that plan because it was "boring" in favor of Ray's more risky plan. Unsurprisingly it fails miserably and Henry has to resort to embarrassing himself to keep his secret.
In the penultimate episode, Drex and his caveman fall asleep, allowing their hostage to escape. Despite this opportunity, Schwoz continues helping Drex in his plan despite him handing Schwoz the memory wiper and Schwoz never considers using it on him or the cavemen, or even attempting to smash it like he had tried before (and failed because Drex took it before he could) in the previous episode to ruin Drex's plan.
What Do You Mean, It's for Kids?: The series features a man who constantly wants to force Henry's mother into hanging out with him, overused dating drama, ruthless criminals, an obnoxious younger sister, and "heroes" who are almost as dangerous as the villains. It's a miracle this made it on Nickelodeon.