Brainbook

her real name is Emily

extremely socially awkward, not very diplomatic, her bluntness can come across as arrogance or condescension sometimes

a bit of a temper but knows how to keep a lid on it

bad at hand-to-hand combat but knows how handle a laser-gun or taser in emergencies

the team's leader and strategist, her plans have a 90% success rate, she tends to take it badly whenever one fails

her glasses are prescription. the yellow lenses help filter out blue light, which she needs because she spends a lot of time on her tablet or otherwise looking at screens for her job

very sexually active (sex is good for stress relief) but aromantic. casual sex? yes. an actual relationship? no, thanks

she has like ten different phds, no one but her can remember them all

her super-intelligence has her always snacking on something sweet to keep her brain active. will sometimes steal the snacks of other team members for that purpose then act oblivious/insulted when they realize and suspect it was her

Equilibrium

Equilibrium is the only name they've ever had and known. they see no reason to change it. though maybe they will add another one. two names make for a more balanced number than one after all

goes by they/them and it/its pronouns, they're a robot so gender isn't really a thing for it

was created by Brainbook during a staffing shortage as an additional team member when the A-Team was being stretched thin by an enormous influx of calls

due to being created to balance out the team, they're extremely focused on the idea of "balance" in general. they will insert it into their job and daily life constantly

it can change its voice on demand, but prefers the more female-sounding one over the alternatives

their body is transformable, they can form all sorts of origami-esque shapes or fold in on themselves to become smaller

good pals with Royd, he often helps it with it's maintenance

people often assume they're insecure about not being a "real" person. they aren't. they think being a robot fucking rules actually, why would they want to trade this perfectly balanced body for anything else?

nigh indestructible but hates getting dirty because it creates visual disharmony in their appearance.

Pom-Pom

her real name is Chloe

youngest team member, in her early twenties, still goes to college

she's an actual cheerleader, much of her fighting style is inspired by her routines

joined the team after Equilibrium was created, due to her great performance catching Brainbook's attention

has some mildly enhanced strength and durability, but aside from that she's all old-school training

used to be an independent hero, took the SDN job to pay off her student loans, doesn't want to bother her parents with it since her family is already not especially well off

the most popular with teens and kids out of the A-Team, is often sent to schools for career days to explain what an SDN hero does

loves animals, will often try to smuggle some into the SDN building, gets caught and reprimanded every time, will never stop trying regardless

she has a social media account for her superhero persona and also manages the A-Team's collective account. the follower count on both is high and only keeps rising

Brickhouse

her real name is Susan

she often gets mistaken for an alien, but she's actually from a paralell Earth. the distinction is important to her and she's annoyed when people get it wrong (which they do often)

gym rat, posts a lot of workout selfies and videos to the A-Team's social media and keeps a strict diet

Phenomaman was her gym buddy before being hit by The Great Depression and dropped from the downtown branch. she's tried to replace him with any member of the team, but Brainbook and Equilibrium weren't interested, Pom-Pom was too busy and Sweetalker politely but firmly declined

due to being from another dimension, she eats stuff that is perceived as weird in the regular one. girl can and will snack on actual rocks and then wonder why everyone's looking aghast

she marathons the cheesiest romance movies in her free time, cries waterfalls at every single one, the rest of the A-Team has to limit her contribution to movie night because they all know she's going to bring an entire movie series that lasts well into the day if she's not stopped

in her dimension, conflicts were settled in one-on-one brawls and it took her a while to get adjusted to the fact that you can't just deck everyone who disagrees with you/pisses you off here. she thinks it's stupid and overly complicated

really good with kids, but also prone to overindulging them, she's weak for puppydog eyes

she's a horrible liar because back in her home dimension there was simply no need for deception, everyone was very straight-forward (and violent) with each other. she's also terrible at acting

Some other General headcanons:

the A-Team is under a lot of pressure due to being seen as SDN's finest and they all cope with it differently. Phenomaman's breakdown and resulting firing made it worse as now everyone kept side-eyeing them, wondering if SDN's darling cracked and wiped out so easily, how long will it take for the rest to do the same?

while they all liked and got along just fine with Phenomaman, none of them were especially close with him, due to a mix of Katon just sucking at interpersonal relationships and his reputation as a living legend keeping the rest of the team at a respectful distance. they're happy he's found himself with the Z-Team though

Sweetalker and Brickhouse have a 'will they won't they' going. Pom-Pom ships it, Equilibrium is indifferent and Brainbook hasn't noticed yet

Pom-Pom has managed to make Equilibrium and Brickhouse accomplices in her small cute animal smuggling just by showing said animals to them

Brickhouse "That is the cutest thing I have every laid eyes on, I am going to protect it with my life" - Pom-Pom "Sooo, you'll help me-" - Brickhouse "YES!"