-For pride month, here's an AU where the entire team is Trans. In which Conner goes by "Kr"  because it's ungendered-

Pronouns:

Robin, Kid Flash - he/him (trans boys)
Aqualad - he/him (Transmasc)
Ms. Martian - Any (multigender/nonbinary)
Artemis - she/her (transgirl)
Kr - he/they (questioning)

"It will dry so quickly now." Kaldur had been all giddy since they'd blitzed his braids with Wally's dad's clippers, without all that hair weighing him down he was all over the place, constantly reaching up to feel his freshly shaved head. "My mother will be surprised."

"Mine was." Wally replied, "You should've seen the whipping I got when I cut it all off-- for the past ten years she'd been putting me in pigtails for school photos, let's see what she does this time."

"At least you two got to cut your own hair." Richard huffed. Bruce had made him go to a salon for his cut, and despite insisting on the masculine style he wanted, all he'd gotten was a dainty pixie cut. He was very much still Bruce's little girl to the public, his guardian insisted it would be better if they quietly change the enigmatic Robin's gender, so Dick could try out being a boy without all the public attention. 

"I bet your friends will be surprised too." M'gann chimed in, turning to Kaldur. "They've said goodbye to Aqualass for the last time, and now it's time for them to meet Aqualad!"

"I'm sure they will be surprised..." Kaldur mused, rubbing his palm over the frizzy stubble again. He'd picked the name his parents would've called if he'd been born a boy, but even though Kaldur'ahm wasn't so different to Kell'ahm, he was still shy to tell Garth or Tula or the others. "I suppose it's much the same for you." He said, "I don't know about the customs on mars, but transitioning isn't particularly common in Atlantis, at least not publicly, though it's well known that many animals there swap sexes. It wasn't until I came to the surface, and saw Kid Flash go from girl to boy that I realized it was a possibility for me to do so."

"Martian sexes and genders are pretty different from human sexes and genders," They shrugged. "I like the name Ms. Martian, but I'm not just  a girl, you know? I'm all of them!" Xe explained. "You know? Me and Kr are pretty similar like that. He doesn't have a gender and I have all of them!"

"Whatever makes you happy." Dick said, adjusting his binder. At least he was able to bind with an athletic binder, Wally had to settle for an athletic bra and Kaldur seemingly couldn't use anything safely when he was underwater.

Kr didn't need to bind, being so buff their breasts were almost invisible with all the muscle underneath. He was always supposed to be male, but it wasn't until too late in their incubation that the doctors realized they were growing a supergirl not a superboy. They tried to make cosmetic changes, so that he'd still look like Superman, but he was still labeled Supergirl in the logs.

From the second the clone had seen himself in a mirror, he'd known something was wrong. They were supposed to be Superman, why didn't they look like Superman?

Kr went by 'Conner' sometimes, sometimes just 'Con', but almost everyone at school called him 'Connie'. He wasn't sure they ascribed to any particular gender identity, hence why he hadn't changed their hero name to 'superboy', Kr just knew being called by Superman's pronouns made his chest flutter sometimes and they wanted to look like his idol.

"Robin," Artemis ran in through the zetabeam, the extensions in her ponytail swishing behind her. "Did you order them?"

"On Bat's card-- don't tell him." The smallest teen confirmed. "Three pairs of tucking underwear on the way."

"Yes!" She fell onto the sofa. "When will they be here?"

"Five-to-eight business days."

"Ugh!" She sighed. That was so long to wait for an impatient teenager. She was still wearing her school uniform-- her old school uniform. 

Oliver had made a big fuss forcing the school to allow Artemis to wear the girl's uniform, which was kind of nice and kind of mortifying, but without proper tucking she'd been too afraid to actually wear it. Under the school's new policy any student could change school uniform so long as they had their guardian's approval (Rochelle Grayson had immediately started wearing pants half the time), and while Artemis' mom didn't fully get it, but she'd missed her little boy so much that she would even sign off on letting her wear skirts in public. 

Paula and Oliver had both expressed concerns about potential bullying, but there was no way Artemis would actually tell them, she was too scared that if she was bullied for wearing a skirt that they'd make her take out her extensions and go back to wearing the boy's uniform, and that was as worse as the bullying itself.

"Uhm, Artemis, notice anything different about one of your friends?" Wally asked

She opened her eyes, glancing between them. Suddenly the girl popped up in surprise. "Your hair!" several of the others laughed at her slow reaction. "Whoa, when did you do that?"

"Just earlier today." He admitted.

"I played hooky to help cause I don't trust butterfingers or gorilla-grip handling scissors anywhere near Kaldur's face!" Wally explained, gesturing to M'gann and Con.

"You're one to talk, you're so bad I had to come in early and do his fade!" Robin added. 

"I bet I gave him the fastest haircut ever though!" The speedster's squeaky voice boasted. "Easily ten pounds of hair off in twenty seconds!" 

"And probably almost took his eye out!" Robin replied. 

There was another flash as the zeta whirred to life.

"Hello everyone." Dinah called, stepping into the room, gym bag slung over one shoulder. "Nice hair, Aqualass."

"Oh, thank you." He said, a little bashful. He was yet to 'come out' to any of the league, but he could tell from the way their trainer had said his old name that she had her suspicions as to his femininity. 

"I'm sure Aquaman will be taken aback."

"It will be easier to fight with." Kaldur said quickly, "And it will dry quicker."

"Two very important things for you." She agreed. Canary waved them all over.

Artemis began unstuffing her training bra. She hated to admit it, but fighting crime was a lot easier without her beloved fake tits.

"What are we doing today?"  M'gann asked.

"Just running some mid-range drills." She replied "Artemis, have you decided what hero name you want?"

The girl shook her head. "I think... I think it's just Artemis."

"Artemis as your real name and your hero name?"

"Well, it's not like anyone at school actually calls me Artemis." She huffed.

"Alright, Artemis it is then. Let me know if you change your mind." She smiled. "Now come on, I want you into costume, with a towel and a bottle, in eight minutes!"

-Fun Fact: I originally was going to make both M'gann and Con intersex for this part, but I was worried making the aliens intersex would be tone deaf-