There is a nice subversion during the slaver wasp attack on Castle Wulfenbach. The Jägers, who have spent pretty much all their screentime before then needling the Lackya, immediately belt up and get to work when they realise they have a real action on their hands.
Agatha actively helps the renegade Mad Scientists of Britain summon an Eldritch Abomination due to scientific curiosity, which would be bad enough if said renegade scientists weren't already making active attempts to kill her and her friends.
The Principal of Tedd and Elliot's school thinks murals are more important than, say...working fire sprinklers.
Later, The Will Of Magic has this to say about why a scenario where anybody trying to cast a spell caused "massive storms of chaos magic".
Human Seer: That sounds bad. Magic: Yes, people would stop using magic.
Explained later, The Will of Magic has no perception of mortals beyond magic use and certain emotional extremes; it doesn't understand why people would stop using magic (magic-users dying), just that they would.
The Packrat: Packrat lives and breathes this trope. He sells his $2000 high-end Korg Triton workstation and then buys a vintage ARP 2600 with only one voice and no memory for $3000. He'd rather twist the knobs on a synth than those on his wife. He buys an anniversary edition Nord Lead just for the reverse keys and not for the sound. Only three of many examples.
Jareth in Roommates has his priorities straight: first his fun and clothing then his friends and love interest, everything else (like ruling his kingdom) comes later and mortal danger is somewhere at the bottom of the list. So what is his first question when appearing in a fantasy dreamworld where a mountain sized talking (eastern)dragon greets him? "Why am I in armor?" of course.
Girls Next Door: Let's say you just came out of the shower. However, due to unfortunate circumstances, a younger member of the opposite sex barges in, leaving you one split second and a small towel. What do you cov— no, Erik, not your face...
Homestuck pop quiz: A massive forest fire is threatening your home, your friend is about to get hit by a meteor, and you're the only one who can save him via the reality-warping computer game. What do you do?
On another occasion, Rose also lampshades the dedication of GameFAQs writers who continued updating their Sburb walkthroughs while being obliterated by said meteors.
Sam Starfall's priorities are a little out of whack with human society on Planet Jean, at least partially because his home culture has very different values from his adoptive one. For example, because crime is considered a valuable talent in Sqid culture, Sam tends to arrange his criminal antics mostly for spectacle and unnecessary complexity, so that everyone will respect him for what a skilled criminal he is. This rarely works.
Max Post: You want to be noticed. You want to be remembered. A lawbreaker doesn't want to be noticed or remembered! You're pursuing mutually exclusive goals!
In Latchkey Kingdom, the reward for killing the gigantic level-60 Titan that forced a dungeon to be condemned is less than the reward for finding a lost cat, and less than the cost of replacing the how-to guide for killing it.
A tribe of orcs kidnap Lien the paladin and steal Elan's puppet, Banjo the Clown. It's implied that Elan considers retrieving Banjo to be the higher priority.
Nale is accused of this by Tarquin; specifically, Nale's over-inflated opinion of himself means he thinks letting everyone know that he has triumphed is more important than the triumph itself, causing him to jeopardize several plans where success hinged on him being able to keep a low profile.
In one of the bonus strips in Dragon Magazine, Vaarsuvius willingly dispels a Sanctuary spell which is keeping the party hidden from some wights, in order to scold the wights for their poor use of language.
After Nepta in tinyraygun gets robbed by space bandits, she scours her crashed ship and is delighted to find they missed her rations, first aid kits, and comic books.
In Jungle Juice, Suchan's first concern when he and Dohwa are kidnapped is how they're breaking curfew and forced to miss classes. He then bemoans his grades and angrily accuses Junhyeong of being after his valedictorian position.
As the apocalypse unfolds around him, Cueball's first priority is to get himself the Erdos number of 1. Several other mathematicians also share this priority, to the point of needing to form a line. And the Alt Text suggests that he wants to take it further.
Heroics? No, just a sysadmin mad that the terrorists cut his connection.
The student in Priorities deliberately fails a class so the grades on their report card are in alphabetical order.
In Fixed Width, after a night of passion, Rob chooses to send Emily a message saying "definitely just sex" instead of "I love you" because the line lengths in their conversation have been syncing perfectly up to that point, and he doesn't want to spoil the pattern.
The Last Days of FOXHOUND: At one point security on the US-Mexican border has no problem with a hulking Inuit bringing a tank across the border, as long as it doesn't have any Mexicans in it.
In this One Giant Hand comic, Spider-Man is told that a hospital is on fire. Since Uncle Ben told him that nothing in life is more important than porn, Spider-Man asks if there's porn at the hospital. When told no, he refuses to help with the fire.
President Donald Trump uses up the entire science budget on making a deer racist to Mexicans while an asteroid heads toward Earth. As soon as Trump introduces Gerald the Prejudiced Deer, the asteroid destroys the Earth.
Scarlet Lady: The titular character (Chloé Bourgeois's hero identity after stealing the Ladybug Miraculous from Marinette) has some serious issues with this one.
During the first fight with Stoneheart in "Origins, Part 1", she doesn't bother helping Chat Noir until she realizes she's being filmed - and thus able to become famous.
When Marinette calls her out in "Origins, Part 2", Chloé gets angry... because Marinette called her ponytail "stupid".
After The Bubbler sends all of Paris' adults to the stratosphere, her main concern is cozying up to Adrien in the party the Akuma's throwing for him. She only breaks it up when she sees Adrien dancing with Marinette.
In "Copycat":
As part of her preparations for the statue unveiling, she puts on makeup - including eyeshadow that, as Tikki points out, won't be seen because of her mask.
She complains that her statue is (a) shorter than Chat Noir's and (b) not made of gold.
When Chat Noir (actually Copycat) steals a painting and kidnaps Marinette, Chloé assumes that Chat Noir is acting out because he's jealous.
She gets "busy" by laughing at Chat Noir as he tries to escape the police.
When she sees two Chat Noirs - one of them being obviously the Akuma - she declares she'll just hand both of them over to the police.
In "Mr. Pigeon", she only transforms when Tikki points out that if she doesn't then Chat Noir will be the one doing the post-fight interview.
In "The Pharaoh", when Tikki attempts to get her to take Sabrina to an outing to the Louvre Museum, Chloé latches onto something Tikki said and believes there's a dedicated Ladybug exhibit, ditching Sabrina in the process.
In "Rogercop":
When Sabrina blue-screens after Chloé has Sabrina's father fired (because he wouldn't illegally search Marinette's bag in search of Chloé's bracelet), all Chloé cares about is to demand her to surrender her bag to be searched.
She's also so monomaniacally obsessed with getting Marinette punished for stealing her bracelet - even with an overwhelming lack of evidence - that she sees nothing wrong with dragging Marinette after Rogercop and demand he arrest Marinette, even getting herself and Marinette kidnapped in the process.
After nearly dying and seeing (as Scarlet Lady) how badly her father is taking her supposed death, the first thing she does when she returns is... to run for her bag.
In "The Gamer", she doesn't care at all about the game tournament, not even when Adrien is chosen as one of the school representatives... until she learns Marinette is the other representative. She attempts to get Marinette killed by the Akuma.
When Marinette reveals she's recording her slacking off in the middle of Timebreaker's attack, she prioritizes yelling at Marinette for "threatening the hero of Paris" over the Akuma which promptly tags her in the back.
In "Kung Food", she's being suspended over boiling soup - but all she cares about is that her hair will be ruined by the soup.
In "Vanisher", she makes faces at Chat Noir which he can't see because she's invisible when he declares he'll double his efforts in Scarlet Lady's absence.
When she confronts Chat Noir in "Riposte" after defeating the Akuma, she ignores him pointing out that she's about to detransform in front of the security cameras... only to run horrified when he reminds her the cameras are also seeing her with messy hair.
In "Captain Hardrock", she's unconcerned about the Akuma's threat to attack a concert her father is attending, only to panic when Tikki reminds her that XY is at the same concert.
In "Animan", when Chat Noir tells Nadja that he's become happier because he now has a reliable partner in the form of Marigold (blatantly implying that Scarlet Lady is useless), Chloé gets angry because Chat Noir and Marigold did an interview without her.
In "Troublemaker", she devotes more attention on some clothes on sale than on the Akuma attack.
In "Ikari Gozen", when she gets imprisoned into the villain's car body, her main complaint is that there is no Bluetooth inside.
In "Prime Queen":
In the face of Nadja's increasingly personal (and intimate) questions about Chat Noir and Marigold's supposed relationship, Scarlet Lady leaves the interview - because it isn't focusing exclusively on her.
When Prime Queen threatens to kill Lila, Scar doesn't care about saving her. It's only when Chat Noir reminds her that it's all being broadcast live that she jumps in.
In "Zombizou":
She only joins the student group because she wants to either see or cause Marinette to be kissed by the zombies, rather than stop the Akuma. This ends up getting her kissed.
After Marigold saves the day with Bee Balm, she complains about the Bee Heroine having a new look.
Unsounded: When the First Silver is tearing through the Deadly Nevergreen and all those inside, does Starfish try to escape? No; he goes after Sette in an attempt to rape her. Notably, he even struggles with the decision for a moment, but does it anyway.
