Aborted Arc: The news that the series would only have three seasons caused a lot of planned story arcs to simply disappear without a trace. What deal did Vlad and the Fright Knight break? What role does Dani end up playing? What did Valerie do after she discovered Vlad's identity and the existence of halfas? Does Dark Danny escape and make a return appearance, as is hinted at in "The Ultimate Enemy"? We'll never know now.
Played with in Fanning The Flames with the Northwestern Nine. Students have to sit in Cramtastic machines to study for it because test scores are directly linked with Mr. Lancer's bonus, but with Ember in town no one can focus. Tucker gets strapped into one by Danny and Sam to undo Ember's brainwashing, but because they accidentally left him there for several hours he got a perfect score while everyone else, including Danny and Sam, had failed.
Action Mom: Maddie is a ninth degree martial artist!
All of the Other Reindeer: Danny is patronized by his family, bullied at his school, and feared and hated in his superhero identity by both most mortals and ghosts. Fortunately, his best friends help keep him steady while the world, starting with his sister, begins to gradually come around.
All-Powerful Bystander: Clockwork. He is the master of all time and has the ability to do pretty much whatever he wants with it. He also knows everything. Despite this, he rarely intervenes and is a fairly neutral character.
An Aesop: Lampshaded, when Jazz freaks out about a ghost attack, Danny tells her, with a bored expression on his face, that the plan is effectively to go try and beat up the bad guy, say a few clever quips, get beaten up yourself, run around for a while trying to fix things, finally beat the bad guy, and go home having learned a lesson about how the world works. Whoopie.
He immediately afterwards gets annoyed that the bad guy doesn't seem to be following this pattern.
Tucker: Looks like we're gonna miss the movie. Sam: Unless we find some way to ignore all speed limits, red lights, and certain laws of physics. Closeup on Danny looking sly. Cut to: ...the kids in an RV going about 120 miles an hour, driven by Danny's dad. Tucker: Couldn't you've just flown us? Danny: The way my dad drives, this is faster.
Sidney Poindexter. He attended Casper High in the 1950s and was bullied so much that not only was bullying him a requirement to graduate, he got stuffed in his locker so many times that he haunts it after his death. Now, he just wants to protect other kids from going through what he did.
Johnny 13 and Kitty. Johnny's main goal is to be left alone with Kitty. Kitty rarely does any harm unless Johnny's hurt or is eying other girls.
Amorpho, who just likes to pull pranks, but takes them too far.
Arbitrary Skepticism: Parodied/played for laughs in The Fright Before Christmas. Maddie takes genuine issue over the scientific implausibility of the existence of... wait for it... Santa Claus. Jack, on the other hand, firmly believes he exists. Both of them, are the two "leading" experts and hunters of ghosts in the world, and are arguing this in front of children waiting to see a shopping mall Santa.
Danny has a moment of this when he can't believe that his body is generating extreme cold energy.
That's somewhat justified in that he didn't know it had to do with his ghost powers. That, and depending on how well he's doing in his science classes, he'd know that "cold energy" isn't technically a thing and that cold is actually the absence of energy.
Mr. Lancer: Tucker Foley. Chronic tardiness, talking in class, repeated loitering by the girl's locker room. (Tucker gives a sly smile)
Later, after Jack and Maddie capture Jazz while she was trying to counsel a goth boy:
Jazz: You've ambushed me, suffocated me with smoke, and worse, I was pulled away from Spike before he had his breakthrough!
In "Boxed-Up Fury", the list of what's in Pandora's box:
Danny: Plagues, pestilence, boy bands ...wow, this is one evil box.
When the kids get in trouble in "Kindred Spirits".
Jack: You three are in a world of trouble! Skipping school, stealing and wrecking the Specter Speeder... —>Lancer: Calling me OLD MAN...
"Taking my map, destroying my satellite, mocking my mental health..." ** also:
"I've forgiven him for many things... causing the accident that ruined my life, stealing you, the backwash incident..."
Art Evolution: The main characters don't look like stick figures and actually gain muscles in later seasons; the colors also get more vibrant. Also, the earlier episodes had a very crude, simplistic, and mucky artstyle.
If you think about it, there's a Fridge Squick/Unfortunate Implications possibility for why Danielle's a girl: Vlad could've purposely substituted *ahem* "samples" from himself to replace Jack's DNA for the clones without knowing that the one he used for Danielle had an X chromosome instead of a Y one.
Audit Threat: Used by a fake Government agent against students' parents in "Doctor's Disorders" and by the Guys in White against Mr. Lancer in "Double-Cross My Heart".
Author Appeal: Hartman incorporates space themes (he loves Star Wars) through Danny, who wants to be an astronaut.
Ax-Crazy: Oh, Dan... let's see: The first thing he did upon "reawakening"? Steal the ghostly half of Big Bad Vlad Masters (Our Ghosts Are Different is in full force here) and then killed his own human half in front of Vlad, who viewed Danny as a surrogate son. In his first scenes, he kills at least a dozen people as well and spends much of the episode killing or planning to kill some more. The fact that even Vlad refuses to tell Danny how his human half died speaks volumes. Rather unpleasant, considering what age group this is aimed at.
Backstory: While we do know the basics of how Danny got his powers from the Expository Theme Song, it isn't until the episode "Memory Blank" that we actually learn it was Sam that persuaded him to enter the portal in the first place.
Back Blocking: In "Public Enemies". When Danny is captured by Walker after he walks in to a fake town meeting, one of the many flying ghost guards fills the screen with their backs.
Beam-O-War: Danny and Vlad with ectoplasmic rays in "Kindred Spirits".
Beard of Evil: Vlad, Dark Danny, Ghost Writer, Skulker; minorly subverted with Ghost Writer, who isn't evil, just mad at Danny for destroying the poem and does what he does to teach Danny a lesson about being a scrooge.
Beat It By Compulsion - Ghosts' typical behavior makes them vulnerable to this. A notable example is Desiree granting every wish she hears, even ones that work against her goals.
Bedsheet Ghost: Danny tries to pull this off on Halloween, though he'd probably be better off going as himself, seeing as how he's an actual (sorta) ghost and, for the majority of the series, is feared by everyone who doesn't want to outright beat him down.
Alternate Timeline Jack Fenton ran into a problem with this when he started ghost fighting on Halloween
One of his clones, however, pulls this off in the best way.
Calm, debonair Vlad Masters turns angry if you call him a "fruitloop". Or mention how he lost the woman of his dreams to an idiot and still can't use his vast fortune to buy the Green Bay Packers. Or suggest he get a cat.
Danny's eyes glow green uncontrollably if his berserk button is so much as touched, much less pushed.
Special mention goes to Dark Danny, whose eyes flashed red when he was disguised as Danny and had to listen to Sam and Tucker insulting him.
Although they glow brighter when he's more annoyed, like in Fanning the Flames.
Jack and Maddie Fenton may not be the most efficient ghost hunters around, and they're kind of oblivious in general. But if you ever try to hurt their kids, they WILL take you down.
Beware the Nice Ones: Jack is usually extremely oblivious and very much a Gentle Giant. Vlad made a miscalculation and underestimated him by far. He proceeds to beat up Vlad, which Danny himself has not been able to do, even at the end by himself.
Vlad: "You beat me! How is this possible? You're an idiot!"
Jack: "Maybe so, but I'm the idiot who beat you."
Vlad also fits - while the audience knows he is bad to the bone, most other characters think he is a saint.
Most definitely Maddie. She kicks some serious butt.
Arguably Danny himself, who is laid back and kind of lazy... when he's human (or, rather more accurately, pretending to be). It's when he's not that you need to watch out, as many lesser foes found out, as did Vlad, if in a Bad Future. Luckily for him, Clockwork hit the Reset Button on that timeline... or maybe not so lucky.
Big Brother Instinct: Danny to Danielle. In "Kindred Spirits" he shows only minor signs of it, from scolding her for using her powers irresponsibly, to using his ghostly wail to save her from Vlad after she defects. In "D-Stabilized" he plays this to a T, immediately after she asks for his help he doesn't hesitate to do so, after being knocked out by Valerie the first thing he does is ask what happened to Dani and finally strikes a deal with her if it means saving his "cousin", even keeps his word before Valerie decides to let him go and finally threatens Vlad never to harm Dani again.
Big Damn Kiss: An orbital one at that in the Grand Finale. You can already figure between who. (Hint: It's not Danny and Paulina)
Bilingual Bonus: Season 1, Episode 6 "What You Want" gives us Sayonara Pussycat, an Expy of Hello Kitty. Sayounara/さようなら (with a long 'o' sound that is often ignored in English) is Japanese for 'goodbye'. Danny even shouts "Bye-bye kitty", as a One-Liner.
Nearly all of Wulf's lines, and one of Tucker and Danny's lines when trying to communicate with him, are in Esperanto.
Vlad: What an amazing, unexpected, and totally unplanned surprise! Personalized gift baskets?
The Amity Park signs really love this. "A safe place to live!"
The Blank: Amorpho, a shapeshifter whose default form is faceless. Also, possibly Fright Knight.
Blessed with Suck: Early in the series Danny has little control of his powers and has started sinking through floors and making his pants intangible so that they fall down. He also got banned pre-series from bearing anything breakable while on school grounds.
Body Horror: Happens every time Danny tries to split himself.
Most extreme by far: Identity Crisis. He starts out with two heads, one of which sprouts another head, whose tongue forms the neck for another head. Then, from the main torso sprout two extra feet, a bug eye, a mouth with a bug eye on its tongue, and three more heads, one of whose tongue is a forearm and hand, which sprouts a head on each finger. It just keeps going from there.
Book On The Head: Used in the episode "Beauty Marked". A Beauty Contest is organized in Casper High to elect a local princess, and Sam compete just to protest against the principle. During the walking- with- a- book exercise, she reads hers instead of having it on her head- and soon provoke a general stumbling.
Technus: Nothing like a lazy day of shopping, lattes, and terrorizing the minimum-wage workers!
Breather Episode: After the heavy-handed "Reign Storm" dealt with character developments and important story arcs, the next episode aired was the lighthearted (possibly THE most lighthearted DP episode), "Identity Crisis". There was also "The Ultimate Enemy" which was just gruesome, but the episode that aired after was a light and fluffy Christmas Episode.
Broken Aesop: Vlad is treated as in the wrong for thinking of his imperfect clones of Danny as cannon fodder. However, Vlad is the only one to feel sad when the unfinished perfect clone is killed.
Justified in that Danielle had already turned against Vlad and the clone was meant to replace Danny.
Brought to You by the Letter "S": Danny's costume gets a stylized DP chest symbol on his costume. An episode exists to explain where it comes from, using a Cosmic Retcon so that everyone but Sam and Danny believes that it's always been there.
Butt Monkey: Tucker. He's dumped on quite a lot and has saved Danny more than once and yet, he only gets thanked once and it's a "thanks for being my friend" that Danny throws out to Sam as well. Although it's heartfelt, the execution of how that came about feels rather tacked on and awkward. Later seasons have him either virtually ignored or usually getting victimized.
It becomes part of the plot in "What You Want" when Tucker, after routinely getting pummeled every time Danny ditches him to save the world, wishes for ghost powers.
It also becomes part of the plot in "King Tuck" when Tucker awakens a ghost named Hotep-Ra and sends Casper High back to Ancient Egypt.
"I AM THE BOX GHOST!"
Danny (checking which ghosts he's caught): Ember: Ghost Zone. Skulker: Ghost Zone. Box Ghost:
Danny, Tucker, and Sam: Who cares?
Box Ghost (popping his head out of the Ghost Zone): Hey! I have feelings too you know!
Can Not Spit It Out: Danny and Sam for quite some time. As the series progresses, they tend to hesitate, blush, and stammer whenever anyone asks about their relationship or assumes that they're together, rather than angrily declaring "He/She is not my boy/girlfriend!"
The Tucker-bot from "Livin' Large", later used in "Phantom Planet".
Also, Valerie's first ghost hunting suit, first appearing in the tenth episode. We later find out in the fortieth episode why Vlad gave her the gear!
In the second episode of Season 2, "Doctor's Disorders", Spectra says she needs Danny's DNA to stabilize her new body so it never burns out or grows old. Come the season finale, "Kindred Spirits", Vlad wants his DNA as well, specifically from while Danny is in-between forms to likewise stabilize the Danny clone he was making.
Unless you want to say that Danny's ghost form inhibits mundanes' perception of him or some other Techno Babble, we're asked to believe that changing his hair and eye color is enough of a disguise for him. He doesn't even bother to change his first name.
For that matter, neither does Vlad with his name, though his ghost form is immensely different in looks then Danny is with his, so it may be justified.
Dark Danny in "The Ultimate Enemy" lampshades this, mocking everyone by pointing out how obvious it was.
There was also the episode where Danny and Dash get shrunk and need to get to the Ops Center before Danny's powers fizzle completely as he continues getting closer to being Danny Fenton every minute.
Lampshaded by Danny. "Good thing Dash is a total moron..."
And then there was the whole mess in "Double Cross My Heart": where the Guys In White were aware of this trope, but they pinned Danny Phantom's disguise on the wrong guy
Clock Discrepancy: In an episode, the titular character tricks the Big Bad into thinking he still has 10 minutes left of powerlessness left by turning Vlad's clock back. This allows him to gain the element of surprise and win the fight.
Rather unusual because Vlad already knew Danny's powers were close to coming back, so should have noticed the time was off.
Newscaster: ...the need for competent, non-Jack Fenton, ghost hunters in Amity Park has never been more obvious. Jack: Hey! They said my name!
Coming of Age Story: In his definite Character Development Arc, Danny starts off as a naive boy who is looking for his place in the world, uncertain of the big decisions thrust onto him. By the end of the series, he has grown into a mature lad who continuously handles big burdens displayed before him. By the ending, said burdens and responsibilities are even bigger, but he's grown up enough to face the task.
A smaller meta-arc would be Jazz's coming of age, going from a nosy sullen kid growing up too fast to someone who appreciates her age and knows when not to get involved.
Continuity Drift: In one episode a nerdy friend of Tucker's is mentioned as "Nathan". In a Season 3 episode he shows up again, but gets called "Lester", although it might just be his last name.
Continuity Nod: Mostly the Fenton inventions, but several elements from prior are mentioned in latter episodes (and even move the plot forward). Justifies the great continuity this show has.
In episode 16, "Maternal Instinct", Vlad Masters is shown to have one of the large yellow monster trucks which will later show up in "Memory Blank".
Speaking of Memory Blank, it contains multiple shout-outs to earlier Season 1 episodes.
Danny brings up Sam's "great ideas" of changing the school cafeteria menu (episode 1), releasing the purple-backed gorilla (ep. 3), and selling his dad's old junk at a garage sale (ep. 4). She counters by asking whether he would also like to blame her for puberty, which was used multiple times as an excuse for his "voice change" in episode 5 when Danny was possessed by Poindexter.
Sam's photo album contains the picture she took of Danny and Tucker hugging during episode 3.
Danny also pulls a Fake-Out Make-Out on Sam, which she had originally pulled on him in the episode where Valerie becomes a ghost hunter.
At one point Danny phases down through the floor of the school, noticing the large store of meat in the basement that was discovered in the first episode.
Paulina is wearing the same dress at her Quinceañera (15th birthday party) that she wore to the dance with Danny in episode 2, while at the same time Sam comments that she looks "almost human", possibly in reference to Paulina's ghost-dragon transformation from the same episode.
During Danny's flashback/remembering sequence, special attention is given to him sneaking into the girl's locker room with his ghost powers, which happened in episode 6, the same episode Desiree was introduced.
When trying to act ghostly in order to get Jack to chase him, Danny yells "Fear me!", something a ghost translator from an early episode appended to every sentence spoken by Danny.
The emergency ham shows up in the episode "Pirate Radio", before being revealed to be useful for something in "Reality Trip".
Also in "Pirate Radio", the easy-listening Ear Worm that's on every radio station is a version of Ember's rock song from "Fanning the Flames" - and Foreshadowing for her appearance as Youngblood's partner in crime.
In his second appearance, Skulker still has an appointment to check out a book on purple-backed gorillas. He must have gotten an upgrade since then, since it's never brought up afterwards.
In the episode "Reign Storm", Tucker mentions that Danny caught Skulker and Ember and sent them back to the Ghost Zone together. In the episode "Girl's Night Out", it's revealed that Ember and Skulker are now going out (see also, Pair the Spares). Too much time in the Thermos together?
In the episode "Forever Phantom", Maddie mentions the time Danny Phantom supposedly "attacked the mayor" ("Public Enemies") and when he "stole" everyone's Christmas presents ("The Fright Before Christmas").
Cool Car: The Fenton Family Ghost Assault Vehicle (otherwise known as just "the RV").
A Day in the Limelight: Tucker ("What You Want", "King Tuck") and Jazz ("The Fenton Menace", "Secret Weapons").
Deadly Deferred Conversation: Subverted in the Grand Finale. Before leaving to round up the ghosts needed to save the world, Danny says he has a few things he needs to talk to Sam about after the world is saved (namely, their relationship). While everyone (except the audience) thinks he perished in an explosion, he survived and saved the world, with the episode ending on Danny and Sam's Relationship Upgrade.
Deadly Training Area: Despite being jury-rigged, Danny's homemade training area in his parent's basement includes lasers among other, less lethal, hazards.
Deadly Upgrade: The EctoSkeleton increases the user's power 100 times, while slowly killing them.
Deus Angst Machina: Danny's alternate future. Twisted in that "fate" was really just Clockwork manipulating the time stream to produce what was the worst possible future ever to scare Danny away from his Face-Heel Turn.
Did You Just Punch Out Cthulhu?: Well, to a lesser degree. In one episode, Jack and Danny go fishing when they are attacked by some kind of sea dragon monster. Jack kicks its ass pretty easily.
Disaster Dominoes: In Valerie's father's lab while Danny tries to catch the rampaging ghost dog.
Dish Dash: In the series' very first episode. Danny protects Sam from death by flying dishes by catching them all. Unusual for the trope, he gets all the dishes safely put away!
The Dragon: Fright Knight seems to love this as he fights for both Pariah Dark and Dark Danny.
Drama Bomb: "The Ultimate Enemy." Period. The show had, for one and a half seasons, chugged along its storyline with a fairly cheerful and optimistic tone. Then "The Ultimate Enemy" aired and was, hands-down, the most serious and disturbing episode in the entire show, leaving many viewers speechless upon its first airing.
Earn Your Happy Ending: After having lot of trouble during the whole series, in the last episode "Phantom Planet", things end well for Danny and his friends.
Easter Egg: In one episode, Danny and Tuck are playing a Crash Nebula arcade game. Crash Nebula is one of Timmy Turner's favorite superheroes in Butch Hartman's other cartoon, The Fairly OddParents.
And then in the FOP episode focusing entirely on the origins of Crash Nebula, the comic book that Crash's original form (before he became Crash Nebula) is reading at the beginning of the episode has a picture of Danny Phantom on the back cover.
Egg Sitting: Danny and Valerie, Dash and Paulina, Tucker and Sam all are in the same "this bag of flour is your baby" project for health class in "Life Lessons".
Enemy Mine: Danny and Vlad in "Reign Storm" (against the Ghost King) and "Torrent of Terror" (against Vortex).
Danny and Dash had to work together against Skulker in "Micro-Management", as did Danny and Valerie in the Chained Heat episode, "Life Lessons".
"Reign Storm" also takes this a step further by forcing Danny to unite every ghost he's ever met to defeat the Ghost King.
Done again in the Grand Finale when Danny had to get everyone, human and ghost, to work together to save both the earth and the Ghost Zone.
Jack: So, Danny! You and your little friends want to hunt ghosts...
Danny: Uh, a-actually, Dad, I wanna be an astronaut.
Sam: Sorry Mr. Fenton. I was into ghosts, but they’re so mainstream now; they’re like cell phones.
Tucker: Waste these looks and all this charisma hunting ghosts? Criminal.
Eternal English: You would think that someone who died 1600 years ago would not be speaking Modern American English. Also, the one non-English speaker speaks modern Esperanto.
Even Evil Has Standards: All of Danny's ghost enemies hold an annual truce with any and all other ghosts (including half-ghosts like Danny) so that they can celebrate Christmas. When they discover the Ghost Writer broke the truce, they are not happy, teaming up with Danny to stop him, and save Christmas.
Everybody Laughs Ending: "Attack of the Killer Garage Sale", "Public Enemies", "Double Cross My Heart", let's just say the series is riddled with this.
Expendable Clone: No one, least of all Danny, seems particularly bothered when Danny destroys the less-human looking clones. Only the human-looking Danielle gains his sympathy. This is subverted, however, by the fact that Danny also doesn't seem to be bothered when he destroys the so-called "perfect clone" of himself, which would be, in theory, at least as "human" as his Opposite-Sex Clone Dani.
This is justified by the face that the previous clones weren't fully sentient and if the "perfect clone" awoke, Vlad would've taken out the original.
Dash Baxter serves as an expy for Flash Thompson: they're both Jerk Jocks who bully their protagonist while at the same time being the biggest fan of his superhero alter ego.
Vlad Masters as well serves as an expy for Norman Osborn, aka the Green Goblin. Both being rich evil masterminds who have an unhealthy obsession with the Danny and Peter respectively. They both know their secret identies and initially hoped to take them under their wings. In another nod to Marvel, his origin parodies Doctor Doom.
Star is Veronica Star from The Fairly OddParents, all grown up. Same name? Check. Blonde? Check. Satellite to a non-white Rich Bitch? Check. A cheerleader? Check. The only major difference is that she is voiced by Tara Strong, not Grey Delisle.
Tucker is an expy of Steve Urkel from Family Matters, only without the annoying nasal voice.
The Guys In White are a pretty obvious expy/parody of the Men In Black comic/film series, replacing aliens with ghosts.
Freakshow and Lydia are seen as parallels to The Joker and Harley Quinn, respectively. Not surprising, as Butch Hartman seems to be a fairly big fan of superhero comics.
Fantastic Racism: Most ghosts don't like humans and most humans are terrified of the ghosts. Danny being half-ghost makes it worst, as he's hated period by most ghosts he meets and his Alter Ego is feared and hated by most humans except his Secret Keeper friends/sister and the Alpha Bitch. It gets creepy when Danny hears about his parents discussing what to do with his alter ego's remains if they ever caught him.
Although in the humans' case, it's somewhat justified. The majority of humanity's first experiences with ghosts stemmed from an attack by a group of Danny's enemies from the Ghost Zone. Until that point, it was the people that believed in them were the ones that were ridiculed. The reason Paulina was amongst the first to stop hating Danny was because Danny outright saved her life, at which point she started to idolize him.
Jack is actually a subversion, as he appears to be the same old Bumbling Dad, but he has been shown to be a competent inventor as well as being able to take out even strong ghosts when his family's on the line. He's still a ditz, but not as useless as one would originally think.
Fate Worse than Death: In "Reign Storm", not only does Pariah Dark get sealed back into his sarcophagus for the rest of eternity, but he gets sealed back into his sarcophagus for the rest of eternity backwards.
Fight Unscene: Economy animation causes lackluster fighting scenes in what is otherwise an Action/Comedy series. This improves somewhat starting around the second half of Season 2 due in part to storyboarder George Goodchild.
Foreshadowing: Loads. A lot of it is really subtle and hard to catch until you rewatch things, but two good examples: the ectopusses Danny fights in episode 1 are sent by Vlad (who only shows up in the seventh). In the background, Valerie says "Mrs. Spectra says I worry too much about material possessions" in "My Brother's Keeper." The next episode, it's the loss of her material possessions that drives her to become a very aggressive ghost hunter.
Valerie tells Sam in "Reign Storm" that she'd better make a move on Danny, before someone else does. Soon enough, Valerie and Danny start dating, if only for a short period.
Forgotten Anniversary: When the anniversary gift goes to the ghost world...guess what happens. Subverted in that it isn't Jack's Anniversary present for Maddie but rather a present for his Sister-In-Law's anniversary of her Divorce.
Four-Temperament Ensemble: "Team Phantom" - Danny is choleric for good leadership skills, but with highly emotional personality; Tucker is sanguine because he's fun-loving; Jazz (though not depressive) is melancholic/leuquine for her kind but perfectionist persona; and Sam is phlegmatic because she's a responsible Stoic Goth.
Freak Lab Accident: "But then Danny took a look inside of it. There was a great big flash! Everything just changed! His molecules got all rearranged!"
Friendly Enemy: Vlad implied in one episode that his relationship with Danny is like this, stating "I'm sorry, but funny, joke-around Vlad isn't here today" before attacking him. This is a relationship Vlad saw with Danny during most of the series' run, on account of the villain's desire to have Danny as his surrogate son, his role as an Unwitting Pawn notwithstanding.
Played with in the Alternate Timeline in "Ultimate Enemy." Danny seeks Vlad's help when his friends and family are killed, and Vlad seems to be genuinely sympathetic when Danny arrives at his door.
By the end of the series, Danny was frenemies with most of the recurring ghost characters. When dealing with a problem bigger than he could handle on his own, he'd often turn to one of the ghosts for help. The fact that he was able to convince nearly the entire population of the ghost zone to help save Earth cemented that status.
Functional Genre Savvy: None of the characters seem to consider that any supernatural activity might be the work of something other than ghosts. It's Justified for Danny, at least, who explicitly has a power that lets him sense other ghosts nearby.
Funny Foreigner: Subverted with Gregor. He's not funny at all, his real name is Elliot, and he's from Michigan.
Furry Fandom: In "Reality Trip", Tucker admits aloud that he finds a wolf lady to be "hot".
Tucker: That may be the hottest geek I've ever laid eyes on. (The wolf lady transforms into a more feral-looking wolf). Sam: Yeah? How about now? Tucker: Yeah. Still hot.
Geek: Tucker (technically a "Techno-Geek"), Mikey, Nathan/Lester, etc.
Geeky Turn-On: Whenever Maddie shows her Action Mom or ghost hunting skills, Jack's usual response is "Man that's hot!".
Gender Bender: In "Attack of the Killer Garage Sale", there is a scene where Technus uses some kind of ghostly remote control to turn Danny into several different forms, one of those forms being a blonde supermodel.
Nearly all of the third season villains were generic Take Over the World villains with little difference between them apart from appearances, voice, and powers (IE: Nocturne and Vortex).
Ghostly Goals: Which (if any) ghosts have "unfinished business" and will pass on after completing it is up for debate, considering the show never addressed afterlife beyond the Ghost Zone; however, almost every ghost Danny fights is the "attack the living" type.
Girls' Night Out Episode: Aptly titled "Girls' Night Out", featuring Jazz, Maddie and Sam stopping Spectra, Kitty and Ember from making all the men disappear.
Good Colours, Evil Colours: Interesting switch with Vlad and Danny. It's played straight when they're in human form: Danny wears white and Vlad dons black, but in ghost form, the hero is predominately black while Vlad wears a near all-white suit.
Also played straight with their transformation rings: Danny's being white while Vlad's is black.
As well as with their hair.
And with their eyes, energy blasts, and skin colors in ghost form (no, not like that. It's blue, as in the exact negative of Danny's).
In the episode 'Double Cross My Heart', Danny grows increasingly irritated about Sam's crush on the new transfer student.
Sam: I've been looking for you. Danny: Where, in Gregor's locker? Sam: Whoa. Thank you, Joe Hostility.
Green Eyes: Danny in ghost-mode, along with most of the ghosts. In fact it's something of a give away when it comes to the ones that can pass for human since while there are some human characters with green eyes, that particular shade of bright ectoplasm-green is unique to ghosts.
Groupie Brigade: One episode focused on this when Danny Phantom (by this point, a well known hero and celebrity) is on the run from screaming teenage fans; most of which come from his own school. He had to secretly turn human to get away from the crazed mob.