Inverted: Alice tirelessly tracks down known philanthropists and gives them a beatdown.
Subverted: Bob thanks Alice profusely and she reacts in shock, revealing that she had no idea that Bob was even there, let alone being bullied, and showing that she's beaten Carol bloody for no reason.
Double Subverted: It's slowly but surely revealed, however, that Alice has done this multiple times. She attacks various bullies, using her Jerkass Fašade and status as a 'psycho' to prevent retaliation against the victims. It isn't their fault, after all, it's just Alice being a lunatic.
Alice steals the lunch money of bullies even when they're not going after anyone.
Alice keeps an anti-bully flamethrower in case of bully attack (break glass) in her locker. Bullying rates are low at her school.
Alice turns into a schoolyard version of The Cowl, ambushing bullies from the shadows and using extravagant terror tactics to deal with them, like the classic High-Altitude Interrogation.
Bully: Please, let me down! Let me down! I'll never threaten another nerd, I swear to God! Alice: SWEAR TO ME! (She says just before dropping him, while he screams in terror... And catching him back with her Grappling-Hook Pistol before he crashes into the ground)
Zig Zagged: Alice bullies Carol into giving up on bullying Bob. And when Carol is gone, Alice goes on to bully Bob. But it turns out that she only does it because she saw Bob bullying Sally earlier that day. She then goes on to lock Lester in his locker just for giggles.
Averted: Alice takes no action against Carol.
Enforced: "We need to show the audience that Alice is good, but tough. Let's show her defending Bob against some bully."
Lampshaded: "You don't even know Bob, do you just go out of your way to find bullies to beat up?"
Defied: Alice acknowledges that beating Carol to a pulp, while deeply satisfying, wouldn't solve the underlying cause of her maliciousness and works to give Bob the self-confidence to stand up to Carol without using violence.
Discussed: Alice suggests to her friends that she go after Carol, but decides it's too dangerous.
Conversed: "I wish there was someone in my school who went around beating up the bullies"
Alice admits that she only does it to vent her violent tendencies, but rationalises that as long as she's only hurting people who would otherwise go on to hurt innocent people, she's doing more good than bad.
Alice is a Martial Pacifist, who prefers to talk things over with bullies, but if things take a turn for the worst, she's willing to fight back.
Played For Laughs: Alice starts dressing like a Superhero, dropping from rooftops to save kids from bullies.
Played For Drama: Alice goes to Knight Templar extremes by taking over the school and creating rules that can get a student who does even the slightest amount of bullying expelled. Eventually the students realize Alice is being a dictator and giving them a much harder time than the bullies did. The students, with the help of the former bullies, overthrow Alice.