Deep within the sewers of Canterlot.

"Why are meeting here?" One mob boss said. "Everyone knows they have eyes everywhere."

"Relax," A second one said. "The Rainbooms thinks we left town months ago."

"I encounter three of them and they dismantled my op brick by brick and all before lunch."

"Took down all my men that money could buy. Heck, I can't even sleep nights."

"Yeah, those girls ruined me as well," A third one came in. "But you can kiss those worries goodbye. I found the solution to our problem. A merc volunteered for some physical enhancements in a secret lab deep in the Amazon. Wild, eh?"

"Yeah, we got the money."

"We're in."

"Gentleman, meet Jawbreaker."

A guy in a trenchcoat approached them.

"Are you sure this guy can take them down?"

"Yeah, seven on one are bad odds."

"There is much more to me than meets the eye."

"Hey Tyler," Applejack greeted him. "What you're working on?"

"Don't know yet, but it will be cool. The engineers have no clue, that they're building tech for you and the others."

Hours later, an armored truck was making its way to the bank.

"What the" The driver was forced to stop by a construction sign. "Construction, at this time of night.

Then the truck was flipped over by an unknown figure, then Rock Roller arrive and walked toward the truck.

"The money's still there, I've been baited."

"Rock Roller I assume?"

"The masked look is really catching on,"

"Defeat me, and you can remove it."

"Sorry bucko, I don't fight for the pleasure."

"Then fight for your life!"

He charged right at her only to miss. then Rock Roller easily overpower him and threw him into the armored truck.

"Alright, partner, start talking, you can start with name and motive."

"I am Jawbreaker, the person you ever face or see." Jawbreaker used his chemical steroid infusion to make himself bigger and stronger.

Jawbreaker roared and tried to punch her but Rock Roller dodged it, and hit a lampost instead.

"Lights out, Rockhead!"

Rock Roller tossed her rope and swung on out of there.

"Go on, flee!"

Jawbreaker didn't realize that Rock Roller swung around and kick him in the face. As Jawbreaker closed in, Rock Roller did a series of punches and kicks that he was unfazed by, which force her to form pillars of stone and throw at him but still hang on, in a quick second Jawbreaker grabbed her and smashed her toward the ground then threw on a wall, then back on the ground, Then Jawbreaker throws her across the wall that knocked her out.

"Take the money! Take it!" one of the guards pleaded.

Jawbreaker approached the truck and lift it only for him to take two money sacks.

"Pocket change. With the muscle gone, Canterlot is mine," Jawbreaker exclaimed then left.

Hours passed as Rock Roller came around and used every last bit of energy she had to get walk into an alley

"Fluttershy, need help," She called Fluttershy's number as Spitfire and Greg showed up.

"What happened?" Spitfire asked as she and Greg untie them.

"Big guy! Wears a mask!"

"One of the Rainbooms?"

"Bigger! Threw Rock Roller that wall!"

Greg and Spitfire looked a the wall where Rock Roller was thrown.

"Okay, if a dude was buff enough to her through bricks," Greg stated.

"There's no way that Rock Roller could walk away from it."

"So, where'd she go?"

Little did the detectives know that Vine had Rock Roller on her back by using spirit bear form.

"Dispatch, requesting APB on masked suspect of Rogers and Engelhart, be advised perp is extremely dangerous," AS Greg called HQ.

"And send units to all area hospitals. We're looking for any new admissions with multiple fractures. If we find the patient, we find out Rock Roller's true identity."

"So let me get this straight, Applejack had a run-in with Jawbreaker that some kind of weapon that made 10 times stronger and put the hurt on her," Rainbow asked Fluttershy which she nodded.

"Then why not take her to the hospital, darling," Rarity added.

"I tried but the police were already there by the time I made it," Fluttershy explained.

"Spitfire must've figured if Applejack was admitted to hospital and had the same injuries as Rock Roller her cover would blow."

"Hey what's this I hear about the cops combing hospitals for Rock Roller?"

"I thought this guy was supposed to solve our problems."

"If I did not break all of Rock Roller's bones. I guarantee you, I crush her spirit!" Jawbreaker assured them.

"How's she doing?" Rarity asked.

"So far she is stable, but looking at the x-rays, we're looking at multiple fractures," Trevor explained.

"I thought she had rhino-like skin?"

"She does. She can take a multitude of blows and still be strong enough to fight. As long as they're not all critical blows."

"And with AJ sitting in here, Jawbreaker is running around Canterlot taking whatever he wants," Rainbow exclaimed. "As there's no way the police can handle him. We got to do something!"

"May I remind you, that Jawbreaker has a fuel line that makes him strong and nearly invincible skin, how are we supposed to deal with him?" Twilight asked then noticed something. "Has anyone seen Trevor or Tyler?"

"Are you sure about this? Trevor asked as the two had finished Building something

"I'm sure, knowing AJ she doesn't want to back out, but this design will even the odds," Tyler said as Applejack enter the lab.

"Well would look that, AJ, how you are feeling?"

"Feeling fine, still feel a little tight across my back," Applejack then look at something. "What in the hay is that?"

"This is what we called the Rock Golem, it battlesuit that is strong as you in the event that really something bad happens," Trevor explained.

"Like dealing with Jawbreaker, say where are the others?"

"Take a good guess."

All units, disturbance at 437 Adams. Masked Intruder on-premises. As the police dispatch on heard in Spitfire's car.

"This Spitfire, I'm in the area. I'll check it out."

"Spitfire, Galloway, thought we were off-duty."

"Jawbreaker didn't the memo."

"Wait for my backup," Galloway only that Spitfire left her car and ran up the building whereas Jawbreaker found a vault filled with money.

"Canterlot PD! Hands in the air!" Spitfire exclaimed as she aim her pistol at him.

Jawbreaker threw his fist at Spitfire only to step back then actually grab her gun and smash it. Then he grab her and tossed her across the room.

"Night-Night, detective," Jawbreaker exclaimed then the elevator opened up and saw the Rock Golem.

"So you did survive."

"I'm tougher than I look."

Jawbreaker came right at her but Rock Roller braced it and tossed it into an elevator then Jawbreaker got out and ran back to her.

Downstairs, Greg waited for the elevator only for it to come crashing down.

"Alright, stairs it is."

Back up top, both Jawbreaker and Rock Roller continued to brawl with each other. That until Jawbreaker lunged forward, then both landed on another building. Jawbreaker quickly grabs a pillar and tries to slice her.

...

"Spitfire!" Greg saw her lying on the ground. "Need an ambulance, 437 Adams, and every available unit for backup."

Then Ice Breaker tapped his shoulder.

"Are you sure want to do that darling?" Ice Breaker asked as he looked through and saw the Rock Golem and Jawbreaker fighting.

"On second thought... Dispatch cancel backup, just the ambulance,"

"Thank you, good sir," Ice Breaker said then jumped out of the window to meet up with the others.

"How she's doing?"

"Not good," Torando replied as Jawbreaker tore right through it then Rock Roller plucked the pillar and tackle right into him then Jawbreaker punch her right in the eye.

"You can't... beat...Jawbreaker."

Jawbreaker holds her and smashes her through a wall.

"I left you with some dignity last time but now I will unmask you and then break the rest of your bones."

As Jawbreaker tore it, Cyber Witch look at the fuel line and hatched an idea.

"Sparkplug, a static blast as his fuel line!"

"Done!" As Sparkplug fired a plasma bolt at Jawbreaker fuel line that severely shock him then it shorted out returning him back to normal.

"Uh, I appreciate the offer but I may need a little help," Rock Roller said.

"Say no more," Tornado said.

...

[Jawbreaker was found unconscious at the scene amid signs of a struggle but who Jawbreaker struggled with remains a mystery.

"Call me crazy there was different about her?"

"You know that doesn't change things."

"Yeah, I know."

"Are you sure you want to go through this," Tornado asked as she and Rock Roller prepare to spar.

"Don't you worry, Dash, I just need to watch those sudden moves, so what the ante this time?" Rock Roller asked.

"Loser has to buy pizza the next time we have a sleepover."

"Done." As both of them collied with each other.

That does it for this chapter next time it's two for one.