I've heard of people refer to the trope or genre as "killer cuties" adolescent, preteen, or teen girls on murdering or revenge killing sprees. Movies include: Carrie, Kickass, Hanna, Logan (wolverine spinoff), Suckerpunch, characters like XMen Rouge, and the young yakuza girl in Kill Bill, Claudia in Interview with a Vampire, and even Rey in Star Wars. Generally interpreted as addressing unspoken anxiety of society unease with adolescent girls coming of age when they discover and express independence and sexuality.
Other genres mix violence with feminine power like motherhood/reproductiive rights addressed in both Alien, Terminator, Species series.
Alien, Terminator and the like are adult women. The other examples are of teens becoming adults. The examples OP is insinuating and the ones I was referring (without mentioning I guess? I forget) are of pre-teen children with those actual personalities. It's not like a rugrat cartoon where they are babies but have childlike personalities or like Stewy from Family Guy. They're literal children as protagonist handling guns or weapons.
[–] 15920155? 0 points 5 points 5 points (+5|-0) ago
I noticed this waaaay back in the iCarly days (when I stopped allowing my son to watch that crap). Parents were marginalized or missing altogether, and the adults that were included were always depicted as idiots.
[–] 15922962? ago (edited ago)
The hit show PJ Mask has kids sneaking out at night (in double identity costumes) to solve crimes. No parents at all.
A Netflix show Super Monsters features (double identity again) kids that turn into Frankenstein, vampire, werewolf, Cleopatra/mummy, witch, and zombie at night to solve issues. The gist is they learn to deal with their super powers.
For even younger age group, Paws Patrol has puppies and young boy independently solving crimes and safery mishaps caused by the towns adults. Frequently the waspy boomer town mayor is the issue as he is greedy and bumbling idiot.
[–] 15923554? 0 points 1 point 1 point (+1|-0) ago
Ps...
Myth and fairy tales have long history mixing youth and adult worlds.
Sometimes children and adolescents find their way without adult/parental guidance in youth world. Either in isolatuon from adults or in a world with hapless or clueless adults that don't understand and can't help anyway.
Others with youth (seperated from their loving family) navigating a world of untrustworthy adults. Hansel and Gretel, Red Riding Hood, Narnia stories, and the Alice, Wizard of Oz, and Charlie series. The last few notably frequently noted as mind control programming content by pedo authors.
Less often do you have a healthy, integrated relationship where adults and family assist the youth in overcoming obstacles. I'd argue that Harry Potter series is one of the few modern ones. Older examples are Swiss Family Robinson, Lost In Space, etc.