It was a quiet day in Canterlot City, at the Horseshoe Bank, until a massive explosion blasted through the doors and five people showed up. One of them was Melvin and his robot assistant Cogman, two more dudes, and one dressed as a jester with casual attire. He was called Trickster the very supervillain that Rainbooms defeated when they got their elemental powers.

"Ha-ha-ha-ha!" Trickster laughed. "The circus has come in town."

"Hey, you!" One of the security guards called him out.

"Stop right there!" the other one said.

"Cogman," Melvin asked his robot. "Handle this."

"As you wish sir." Cogman agreed.

Cogman used his strength to handle the guards. As for Trickster, he made it to the safe.

"All right, Melvin," As he held a glue gun. "Let's see this is the formula of your's can do the trick."

He fired a glue gun at the metal door, the metal door went from solid to liquid. The woman gasped.

"Like it," Melvin smiled. "I called Melvin Slime. It can turn anything into slime almost instantly."

"And just like that, Instant pay-day!" Trickster said as saw the money. "Love to stay and chat but we bid you farewell."

"Hold it, right there," As CPD officers surrounded them. "Lower the weapon."

"Okay, you're the man." Trickster grinned as fired the Melvin slime at Brick and Smash's feet then fired at Melvin's Lab.

Melvin and Trickster got in the slimed-up Lab then Cogman, Brick, and Smash picked it up throw it up. With the Lab being slimed it was bouncing.

As for the others, Cogman active his rockets blasted out here, and Brick and Smash jumped out of there.

Meanwhile at the Precinct. Chief Damon Andrews was not happy with the officers and the detectives.

"They made you look like clowns," Damon said as slam his fist on the ground. "Six months ago, Canterlot had the lowest crime in the nation, and just yesterday we declared the world's scariest city before Trickster and Melvin's latest escapade."

He pointed to the most wanted wall showing all the criminals in Canterlot.

"But, most of them are in prison or Blackgate." an officer said.

"And who received the credit for those busts?" Damon asked him. "You? Or you, Spitfire? And know it wasn't you Galloway."

"Anyone cared to tell me who responsible?"

"Uh... The Rainbooms... I guess." another officer stuttered a bit.

"Exactly, The Rainbooms," Damon said angrily. "Well, I've had it with clowns, falcons, magic, and vigilantes turning my department into laughing stock. So say hello to my new zero-tolerance policy against all these freaks." As he holds pictures of Twilight, Applejack, Rarity, Fluttershy, Rainbow, Pinkie, and Sunset in their Crystal Forms and puts them on the Most Wanted wall. No exceptions! And for starters, I want Canterlot's finest to take down Trickster and Melvin before any one of them does. Capise."

"Chief Andrews," Greg spoke up. "Going out on a limb here, maybe we had more success if work with them."

"Working with them," He wondered. "Maybe you should wear spandex and become their sidekick. You'd better figure out your loyalties lie, Galloway and fast!"

Later that night...

"Think about Melvin," Trickster tried to persuade him. "If we want Canterlot to be in the palm of our hands. The dull face of tragedy must become the rubber of comedy."

He then the slime at Goldtrot Statue face. "Melvin Slime do your thing!"

Then Brick and Smash went on top and started to scribble and Sunset Shimmer, Pinkie Pie, and Rarity arrived on the scene.

"Trickster! Melvin!" Pinkie called them out.

"Cease this madness at once you brutes!" Rarity said confidently.

"The Sonic Rainbooms," as both Melvin and Trickster grinned.

"Brick and Smash, my marionettes, keep them the ladies busy." Trickster requested. "The artist must not be disturbed."

While Brick and Smash dealt with the Three Rainbooms, Melvin, Cogman, and Trickster continued with their work. Then suddenly Spitfire's car arrives at the scene and looks up.

"You take Trickster and the others," Greg said. "The Rainbooms are mine."

"Galloway, what're you trying to prove?" Spitfire asked as they climb the Goldtrot Statue. "Galloway!"

Both Brick and Smash had the girls surrounded. They luged a broken board at them but Pinkie caused a confetti explosion that blinds both of them allowing them to duck and hit each other knocking them out cold.

All three of them made it to the top, then Greg approached them from behind as he readied his pistol

Hold it, you three," As he aimed the pistol at them causing Rarity to bring her gem shield.

"Detective," Sunset tries to reason with him. "We're on the same side."

"Tell it to the chief." Greg shot back which caught Trickster and Melvin's attention.

"Hold the mayo!" Trickster grabbing everyone's attention. "Me and nerdy are the vandals here."

They both land standing face-to-face with their hated enemies.

"You mean to tell me the chief of police considers these three a bigger menace than me 'The Master of Bedlam'?"

"Or me," Melvin chimed. "That's complete outrage! An insult! In fact detective, I resemble that remark." Melvin said then got blindsided by Spitfire. Pinkie pushed Greg out the way, then Melvin whisted for the lab that had rockets on it.

"See you next crime!" Trickster laughed as they flew out of there.

And want wasn't the worse, The Rainbooms made their quick getaway.

"Andrews is going eat me alive," Greg said in a defeated tone.

Back at Sunset's Apartment. Pinkie told everyone what happened.

"Oh my." Fluttershy gasped.

"You have to be kidding me!" Rainbow said in anger. "Not only, Melvin and Trickster are causing trouble, but the Canterlot PD have made us public enemy #'s 1-7!"

"I guess Chief Andrews thinks doesn't like the fact that we are taken most of the credit." Applejack said.

"True," Twilight agreed. "But it made me think of something."

"Think of what?" Fluttershy asked.

"How would you feel about bringing Greg into the fold?" Twilight asked.

"Allowing someone besides, Scootallo, Apple Bloom, Sweetie Belle, Principal Celestia, Vice Principal Luna, Trevor, Starlight, and Tyler to know our true identities," Rainbow asked. "Speaking for myself, I'm not so sure."

"In my opinion," Rarity chimed in. "I'm certain Detective Galloway can be trusted.

"But's not a matter of trust is it?" Applejack asked Twilight.

"It not," Twilight answered. "Greg needs to know the truth. Before circumstances force one of us to harm the other."

Back at the Precinct.

"Trickster and Melvin remake one of several monuments in Canterlot in their image telling us that those two own the city," Damon said angrily. "And you let him and three of Rainbooms get away?"

"Chief Andrews," Spitfire spoke up. "Galloway nearly had them but the scaffolding gave in"

"Spitfire," Galloway interpreted. "It's alright."

"No, Galloway, I don't think it is alright," Damon said. "Another blunder like that and you can kiss your badge goodbye."

The next morning Greg Galloway meets up the Crusaders and Trevor at Sugarcube Corner.

"You must be in a lot of pressure to catch Trickster." Apple Bloom said being concerned.

"Yeah," Greg agreed with her. "Among others."

"What about your partner?" Sweetie Belle asked,

"Spitfire? She's cool." Greg said. "I mean, she's on top of things, good cop, maybe we should get together for a sweet treat."

"I'm not so sure that good idea," Scottaloo said.

"Don't let her scare you," Greg reassured her. "She only has it out for the Rainbooms."

Then Greg's Phone started to buzz. "Just a second."

"Galloway, who is it?" Greg asked.

"It's Spitfire," Her voice was on the phone. "Our two favorite villains have been sighting. The gallery theatrical on 23rd. I'm across town but on my way."

"Sorry guys," Greg apologized. "Gotta jet."

"No problem," Trevor reassured him "You have a job to do."

Then Greg left Sugarcube Corner Trevor called Twilight's phone number.

"Yeah," Twilight answered it. "What's up?"

Trevor quickly explained the Trickster and Melvin were at the Gallery Theater, so she, Applejack, Rainbow, and Fluttershy suited up and headed out.

Meanwhile, at the Musem, Trickster and Melvin had begun their dirty work. Then Trickster picked up the artifact.

"Such a winning sliding, mon frere." Trickster was amazed then look at the other one. "A shame about ugly stepsister."

He fire the slime at it then changed it. "Turn that frown upside down *Laughs*." Then he and Melvin heard something click.

"Whoops," As they realized they handcuffed.

"Yeah. Whoops." Greg sarcastically.

"I hope this means your chief figured out me and Geek Supreme that we bigger threat than The Rainbooms." Trickster mentioned that. "By the way detective have met our colleagues Brick, Smash, and Cogman."

Greg got a sucker punch by Brick then everything went black. Moments later The CPD arrive at the scene.

"This one is worthless," The owner said. "and its partner's gone."

"Not for long," Spitfire reassured him. "I just tapped into Galloway's GPS unit."

Then the Rainbooms enter the room.

"All right guys let's look around for something that might lead Melvin and Trickster are hiding out," Twilight said hoping for some clues.

"I think I found something," Fluttershy picked up something and showed it to the others.

"What is it?" Applejack asked then Twilight examined it.

"It's sawdust flecked with blue."

At an unknown location.

"All good things must come to an end." Melvin chatted. "Including the last batch of Melvin Slime."

"The chief has a zero-tolerance policy just for creeps like you two," Greg shouted. "He'll never pay ransom for me."

"We don't ransom, handsome," Trickster shot back. "Canterlot is slime in either of our hands. We take what we want when we want..."

"We are simply trying to prove the uptight chief that Trickster and Melvin are the masters of menace by breaking one of Canterlot's finest." Trickster implied.

"We're not going break your bones, we're going snap your twig."

"In other words, active the Whirler!" Melvin shouted.

"Yes, master ." Cogman activated the Whirler.

"When Trickster's done with you..." Trickster grimly said. "you won't know to find your mind!"

...

Meanwhile with Twilight and the others

"These blue specks," as Twilight analyzes it. "have traces of stale sugar on this sawdust."

"Cotton candy. I think I know where they're hiding out. The Equestria Fair."

Back at the fair.

"A very thin line separates normality and from insanity!" as Trickster was about to break Greg's mind.

"He made you look like fools!" Hearing the voice of Andrews.

" We're on the same side. " Hearing the voice of Sunset.

And you can kiss your badge goodbye!

"Life brings thousands of tiny torments in all shapes, sizes, and flavors. Wouldn't you say, detective?"

It's not my fault!. Greg screams given the pressure by the Andrews.

"Ah, so we have issues with the boss eh? Well, who doesn't? Bosses make terrific tormentors. Tote that barge! Lift the bale! Rewrite that script! Sort that mail! All takes is one order too many to make someone crack. All it takes is one rotten day to transform a normal man into a monster! In my case, a rotten day and a dip in vat toxic ooze."

Twilight, AJ, Rainbow, and Fluttershy had taken care of Brick, Smash, Melvin, and Cogman and entered the funhouse.

"So the giraffe turns to the police chief." Trickster continued. "And says, the last thing I saw was that screw-looses detective trying to pick the nuts out of the fruitcake."

Nuts out of the fruitcake...." As Greg and Trickster started to laugh.

"Ah, detective my therapy worked," Trickster was pleased. "It seems you and I finally share the same sense of humor."

"Don't fool yourself Trickster," Trickster turned and saw Spitfire armed her pistol. "Galloway plays for my team."

"Drop it," Trickster aimed the last bit of the Melvin slime at Greg. "Or laughing boy gets it! You have no idea what this stuff does to humans."

Then light breeze of wind caused the gun to loosen Trickster's grip let the gas out and fled the scene the Rainbooms follow him and Spitfire follows right behind them into a room full of mirrors.

"You think this is confusing?" Trickster asked them. "Try living inside my head."

The Rainbooms reached a dead end.

"Through the glass, ladies, where comedy is a tragedy, down is up, black is white, and your luck has run out." Trickster using trying to hit them with a golden face.

"You can touch me," Trickster laughed without realizing that Applejack was right behind him. "Oh fishsticks."

"Say cheese," Applejack uppercuts him out cold.

"Hold it," Spitfire caught up with them and aimed the pistol. "There's nowhere to go, Rainbooms."

"Go, you saved my partner's life." Spitfire lowers the weapon and handcuffs the Trickster. "One-time deal. The next we see each other again those masks come off."

Even though that Trickster was brought in. Andrews was still mad that Rainbooms was not captured and suspended Greg for showing incompetence.

At Greg's apartment...

Greg picks up the phone and the person was Tyler.

"Greg, it's Tyler," who is on the phone. "You sound sick."

"Yeah. Rough night, Tyler. I-I may be going through something. Tell you and others about it tomorrow."

"Over yogurt?"

"Nah, let's shoot some hoops at Sarge's gym. I need to blow some steam off. "

"Sure. Over the hoops."

He hangs up the phone noticed something had suddenly his skin melted.

To Be Continued

Next Chapter: Season Finale Part 2 -The Slime of Tragedy Estimated time remaining: 7 Minutes