Harley Quinn intercepted her and somehow hacked her suit.

Bruce got up from the floor, getting used to the new legs of her body. She noticed her hair was slightly longer and would get in her eyes, and she brushed it off. She had no time to get distracted. She needed to find the League of Assassins.

Suiting up was a bit tougher than she originally thought. It was no easy task suiting up as Batman, but the lacy black bra was a pain to figure out. Eventually, through a bit of flustered work, she hooked it and was able to get suited up again.

Before she left the Batcave, Bruce looked at her new body in the mirror.

She sighed.

"This is for those girls."

Her voice sounded like Cassandra, but had the gruff edge to the way Batman would usually try to speak.

She left the Batcave, looking at her wrist where she kept a miniature bat-computer. She had triangulated the base to one of three locations... Now the question is which one. But as she stayed longer on the rooftops of Gotham, the more uncomfortable she felt. It was definitely a new sensation to be up on the rooftops feeling this relatively frail. Sure, Cassandra was athletic, but compared to her true form, she had to weigh about 100 pounds less.

SMASH!

The alarm blared, shattered glass flew every which way. Harley hummed to herself as she placed her bat her shoulder. The psychotic blonde strolled into the advanced research lab. Her blue eyes ran across the various prototypes cased in glass. She perused until one caught her eye: a tablet with various buttons and a touchscreen.

”Ooo! What’s this doohickey?”

Harley plucked the expensive looking device from the case. She fiddled with it until she found the power button. The Wayne Tech logo greeted her, the tablet accessing the R&D database. She scrolled through classified projects, oblivious to what she was looking at.

“Now this might fetch me a pretty penny!”

Harley beamed.

The lab sent a distress signal to “Black Bat’s” radar.

BEEP! BEEP!

Bruce’s thoughts on her transformation were interrupted by a distress signal. It was from… Wayne Labs? This was far off the path from any of the League's possible locations. What could be going on? Bruce cursed to herself, seeing that she was not in her peak shape. Does she abandon the mission to figure out what could be going on at the labs?

She had no leads. Sighing with annoyance, she turned the corner and ran the opposite direction.

She knew she had stealth even further in her side with her newfound small stature, though her fear impulses might not be as strong, so she snuck through the large broken glass window left by the intruder, and hid behind a desk.

Ugh. Harley Quinn. More of an annoyance than a threat, but whatever she was holding could prove to be a problem for Bruce. She decided to go on the offensive, jumping into action. She glided her foot right into Harley’s back like she normally would, which didn’t do much. She fell on her ass, realizing she had to change up her fighting style if she wanted to stand a chance against anyone with the suit on.

Harley stumbled from the impact, catching herself on a display case. She gripped the device firmly as she turned around, expecting to see Batman. Instead she laid eyes on a girl in a batsuit with a gold logo. Unlike Batman’s cowl, the lower half of her face was fully concealed.

“Hey! That really fuckin’ hurt!”

Harley placed a hand on her hip, narrowing her eyes at the woman.

”Who the hell are you s’posed to be? You’re not Batman!”

Harley brandished her baseball bat, taking a defensive posture.

However, the tablet suddenly beeped. She glanced down at it, the screen showing the blueprint for the programmable bodysuit. She tapped a few random buttons to try and make it go away.

Bruce got up from the ground surprised at the impact that her kick had on herself. She'd need to get used to the way this body threw its weight around.

"Harley, you're coming in with me!"

She tried to do her usual tough voice that Batman would normally have, but it ended up sounding like a teen girl doing a bad Batman impression. Bruce darted for Harley, quickly closing the distance. But as the clown started pressing buttons, she felt her leg just... stop working. Her arm followed suit. They just went limp as Bruce fell to the ground, prone.

Looking up at the deranged criminal, struggling to get up. But it was useless given that her left arm and leg were numb, from the suit commands Harley put in stopping the flow to those parts.

"ACK! Stop this at once!"

She said, no longer trying to do a voice, struggling on the linolium floors of the Lab. She looked up, to see Harley Quinn's smirking face above her.

Harley reeled her bat back, readying her swing for the vigilante but the girl just… collapsed? The blonde rested her bat on her shoulder, furrowing her brows as she watched the girl lay motionless on the floor.

”You’re not having a stroke or somethin’ are ya? I know CPR!"

The blonde tapped her with her foot a few times. Something else was going on, she just hadn't pieced it together yet.

"Why ya playin' possum? I thought you were supposed to be a bat!"

She giggled, realizing the Black Bat couldn't move for whatever reason.

"Don't look at me, girly! I didn't do nothin' to ya!"

Harley paused, her eyes drifting to the tablet. Maybe she did? The points on the bodysuit diagram in the leg and arm joints were red with lock signs.

"Huh..."

Harley tapped the ones on one of the legs, the lock signs disappearing and feeling was restored in Bruce's left leg.

Girly... This comment did not go unnoticed to Bruce, whose face was blushing underneath, humiliated that she lost so much power in this fight against Harleen Quinzell.

She felt the feeling come back in her leg, which she shook around a bit before standing up, her left arm still limp.

"You're coming with ME, Quinzel..."

She growled this as she tried to attack Harley again, using her good arm to throw a punch towards Harley's neck.

"Sorry, only Batman gets to throw me around!"

Harley pressed the buttons to lock up both arms and legs, curious to see if her theory was correct. If she obtained the desired effect, Black Bat would collapse again before having the chance to strike her.

"No fuckin' way!"

Harley smiled mischievously.

"Tell me this ain't some kinda prank! I got a remote that controls your costume!"

Harley hadn't connected the dots of what the suit actually was and just assumed she was in control of the batsuit Bruce was wearing, not the Cassandra Cain suit underneath.

Before her punch could reach her throat, her entire body froze up, and fell again painfully to the ground.

"Goddamn it Quinn! You don't know what you're dealing with! This is incredibly sensitive technology!"

She couldn't even struggle on the ground, only gritting her teeth beneath the suit, under the control of the clown princess of crime.

"That's enough whinin' out of you!"

Harley scrolled over to the advanced options tab and hit the mute button. Bruce's lips suddenly wouldn't relay her speech. Weirdly enough, she found a whole lot of settings that didn't quite jive with her "batsuit remote" theory.

She read the details of the suit and looked at the images more thoroughly. The R&D notes alluded to it being some sort of super advanced biosuit. Capable of shapeshifting to match the genetic template inputted by the user. Tech the likes of which she'd never even fathomed could exist.

"Somethin' tells me you're wearin' more than just black latex, hon'. That true?"

Harley flicked the setting to allow her captive to speak, activating an additional "truth serum" setting.

"Yes, that is true. This is a highly advanced stealth suit, meant to disguise any individual, invented by Lucious Fox. I am currently disguised as Black Bat."

The words flew out of Bruce's lips once Harley allowed her to speak. It was scary how willing it felt. It didn't feel like those words were **** out of her, it felt like she wanted to tell Harley this information. Damn Truth Serum. Why did they even include this in the suit? She bit her tongue once she answered her question.

"Well that explains why your kick wasn't shit! You ain't even whoever the hell this Black Bat chick is s'posed to be."

Harley laughed but she realized the two of them were still standing around in a Wayne Tech facility she busted into.

"How's about you get me outta here?"

Harley activated the "friendly mode" parameters. This way "Black Bat" couldn't lay a hostile finger on her. She also restored her mobility and feeling rushed back to her arms and legs. However, she enabled "proximity mode" as well, meaning Bruce couldn't stray too far from her or else her suit would seize up. Once the duo were safely on a nearby rooftop, she continued her line of questioning.

"So if you're not Black Bat, who the hell are you really? What's the point in goin’ to the lengths of puttin' togetha an overpriced stealth suit when you coulda just put on her costume to begin with? Kinda like cosplay?"

It still hadn't clicked that the girl before her wasn't really a girl at all.

It was incredibly humiliating and frustrating as Bruce had to follow Harley out of the lab. She could have taken her down so easily in her normal Batman form, but now she was **** to be side by side, unable to do anything to take her down. But it got worse as Harley began her barrage of questions. Her toungue bled trying to bite down into it, avoiding her questions, before the floodgates opened.

"I'm really Batman. I'm using this stealth suit to find out where the League of Assassins have been **** young women over the past couple of weeks. I planned on using this disguise as Cassandra to get myself captured and then escape and free the captives."

Fuck. The plan sounded stupider out loud, but she didn't miss a detail. At least she didn't reveal her secret identity.

Harley stared at "Black Bat" blankly for a moment. She burst out laughing, grabbing her sides.

"You-you've gotta... HAHAHA... be kidding me... HAHAHAHA!"

Harley chuckled.

"There's gotta be hidden cameras 'round here. Am I bein' pranked? That was your master plan? Put on a girl suit and fight your way out of an assassin cult all by yourself? When you can't even land a good kick right?"

The ex-jester glanced across the nearby rooftops in search of a reality TV crew. But as her eyes fell back on the girl, she knew she was telling the truth. That voice she was doing started to add up. She was Batman trying to sound more masculine with her higher pitch.

Giggling, Harley opened the voice tab and switched things around so anything Black Bat said would come out sounding like a rich valley girl.

Bruce could do nothing but grimace as Harley busted a gut at her predicament. But she could see that if she tried to leave at any point... she would be fucked. She needed to figure out a way out of this.

"Stooooop laughing! This is like, SO not funny!"

She stopped, her head slowly coming out of her stern position. She put her hand to her throat, and coughed.

"Omigosh, my voice sounds, like, sooooo weird?"

There was definitely something going on. She tried as hard as she could to be stern as she kept her shoulders square and pointed a demanding finger at Harley.

"Like, what the heck did you do to me?!"

Harley burst out laughing a second time.

"Ain't it obvious? You were tryna sound all macho and crap and it totally doesn't fit this new look of yours so I fixed it for ya. You don't gotta thank me."

Harley began tinkering with more options, fixing "Black Bat's" posture and her walk style. She altered her mannerisms to be decidedly female in form and slightly exaggerated hip sway.

"How about we head back to my place?"

Harley smirked villainously. A torturous idea crept into her unhinged mind.

"Um, No thank you?! And I wasn't goin' to thank you!"

Ugh, even when disagreeing with her, Bruce sounded like a teenage bratty girl! But as Harley Quinn walked further away from Bruce, forcing her to follow, she found herself swaying her hips. She looked down and saw her feet stepping in a line, in an incredibly feminine manner. All this before she even noticed her hands arched close to her sides, looking like she should be carrying shopping bags. Her chest was forward, feeling like she was showing off her assets... which didn't even belong to her!

"There ya go. Now you're showin’ off what your nanobots gave ya!"

Harley took "Black Bat" back to her dingy old safehouse. She'd rather have some level of privacy with her new test subject.

"Alright, toots. Take off that dumb bat mask. It's not really you and it's not like I know this Cassandra chick anyhow. I don't even know anyone named Cassandra."

Bruce stood in an exaggerated feminine pose in front of Harley, unable to escape.

She took her mask off, revealing her teenage girl self, and her short black hair.

"You're never gonna get away with this! You're totally gonna go down!"

She tried to threaten Harley through words, but now without the mask, she felt even sillier than she felt like she sounded.

"Damn..."

Harley took in the face of the other "woman" for a moment.

"You're more... easy on the eyes than I thought you'd be. Since y'know... you're usually a big looming linebacker with a bat fetish. How'd ya even fit in that thing anyway?"

Harley asked as she perused the tablet's settings. She discovered the body's manipulation options, learning she could do far more than merely alter the way the suit moved. She could change the size and shape of the suit's body parts as well as change her body entirely provided the genetic code for the person she was looking for was on file.

"I mean, it like hurt... and felt kinda good? Anyway, the nanobots shrank my whole bodymass junk, and now I'm like this!"

Why couldn’t she hide the truth?!? She looked away from Harley, embarrassed.

"Kinda good, huh?"

Harley raised a brow at that.

From what she was reading, the suit consolidated Batman's mass and made him a her. All the way down to the junk. Apparently the suit syncing with its host can be highly pleasurable. Curiously, Harley tapped on the breasts on the suit diagram and ran her finger around the dial turning it up. Suddenly, Bruce's bust encased in the tight black costume started to stretch out even further as they grew a whole cup size in mass.

"Damnnnnnnnn! I can make ya hotter too!"

She did the same to Bruce's rear and hips, causing the suit to barely contain her newfound curves.

Bruce felt her body mass disfigure, becoming curvier and heavier at Harley's will. Her breasts and ass were making the suit extremely uncomfortable to wear, as she felt it rub against... everywhere.

"Like, stop it Quinn! This is totally weird-OohhHh~"

She involuntarily moaned at feeling her sensitive nipples against the suit. Bruce had to update her stance to stand up to Quinn, albeit with her hip out.

"Don't mess with my...ah~!...Body!"

"Hahaha! Is this whatcha meant by it felt kinda good? I bet I can make it feel a lot good...."

Harley enjoyed having the brooding Dark Knight at her mercy like this. She swiped her finger down the "sensitivity" slider, watching as "Cassandra" began to writhe from the sheer amount of lust her body was being **** to endure.

"Hey, don't get mad at me! You put the girl suit on to begin with!"

Well she was right about that. He laid the trap to his own demise.

“It was like, totally strategic! I was gonna… OHHHHMYGOSH~!!”

As the sensitivity sliders went up, Bruce’s knees started to buckle, unable to control herself as she felt every bit of friction between her exaggerated body and the suit rub together.

She couldn’t think. Not even her trained Batman mind was prepared for the amount of extacy she was feeling at this moment. She needed out of this, before it became too much…

“Please! Like… ah!… stop this! I’ll… ohhh~… do anything!”