The Regular Show X Reader

Return of (Y/n), Mordecai and the Rigbys

"Sousaphone?" She blows a foghorn blast that blows Thomas' fur. She returns this time with a... "Theremin?" She demonstrating its tone by running her hands over the top and side antenna attachments. "So magical." (Y/n) said, and Rigby snickers. "I might take a little too long to learn how to play something like that. I'll just be your British manager." He said.

"Exactl... wait, what?" (Y/n) asked when she thought she heard right. "Yeah (Y/n), every band has a mean British manager." He speaks in British accent. "Oi, you lot!" He snickers and again speaks in British accent. "We're supposed to play Manchester on half an hour ago!" He shouted. "Okay... if you say so." (Y/n) said. "Uhh...sure, man. So, you guys with us?" Mordecai asked.

"If it means getting out of this heat wave, then we're in!" Muscle Man said. "AC! AC! AC! AC!" The gang shouted. "You guys better know what you're doing!" Benson shouted. Later in the garage, the gang are setting up the band and playing music. "Guys? Guys?" (Y/n) asked.

"Hey, listen up you lot, (N/n) here has something to say!" Thomas said in a British accent, he then leaves. "Uhhh...thanks, Thomas." She giggles a little. "Now we're all in this together and we all have equal say. No one person is in charge, okay?" She asked. "Fine! Even though I've actually been in a successful band before." Benson said. "Okay, we need a really awesome tune. Anybody have any song ideas?" Rigby asked.

"I'm working on a rock opera! It's a little thing I call: Benson-Phonia!" Benson said. "Benson, no offense but since we're equals now, that sounds totally stupid, bro. No offense!" Muscle Man said. "I'm pretty sure he took offense to that." (Y/n) mumbles. "Actually, I've been working on a riff." Mordecai said. "Let's hear it!" Pops said. "Yeah, man!" Rigby said. "Okay, I'm a bit rusty, alright? Okay, okay." Mordecai plays a guitar riff, and then the rest of the band plays along with it one at a time.

"C'mon, Mordo!" (Y/n) said. (Y/n), Mordecai and Rigby play a short riff. " ♪ Sometimes I dream about that AC, AC! Cold waves blowin' over, over me. Feelin' hot maybe it's a state of mind, Think cold to pass the, pass the time! Snowman and, snowstorms, ♪" Mordecai sung. "Stop, stop, stop! Again! One and-a two and-a three and-a four," Benson and the band play in unison. Benson points at Muscle Man. "You're not blowing hard enough! I mean, really blow!" He turns to High Five Ghost. "And as for.." Later Benson is playing the drums. "You're flat! You're flat!" Benson shouted.

Benson plays the keyboard to Pops. "See how much better that sounds?" He takes a listen to Skips on the bass. "Skips, you gotta play on tempo!" Benson said. The band plays but Benson interrupts. "Again!" The band plays but get interrupted again. "Again!" The band is interrupted for the third time. "AGAIN, AGAIN, AGAIN!" Benson shouted.

Later in the restroom, the band except for Benson are having a meeting. "Sorry for the weird meeting place, but Benson only allowed one bathroom break and we got some urgent business to take care of. Now, I'm gonna say what everybody else is thinking. We gotta do something about Benson, right?" Mordecai asked. "Well, he is being pretty controlling." (Y/n) said. "He told me my bass playing was sloppy. Me, Skips!" Skips shouted, and (Y/n) mentally laughed at that. 'Someone has a big ego...' she thought to herself.

"He told me my arpeggios don't arpeggi-flow! What does that even mean?" Pops asked, and (Y/n) tried hard not to laugh at that. "At this rate, we're never gonna win that AC! And the Battle of the Bands is in a few hours!" Rigby said. "Who thinks me, (Y/n) and Rigby should run rehearsals?" Mordecai asked, and everybody raises their hands. Rigby flushes the toilet. "Meeting adjourned!" Benson is outside of the stalls listening angrily to what they're speaking about.

"Alright! Good meet—" Mordecai screams as he sees Benson. "I came to check up on you guys. I'm the only one taking this seriously and you BACKSTAB ME LIKE THIS?!!?!!" Benson shouted, his temper rising. "We wouldn't have to if you weren't so controlling!" (Y/n) shouted. "WELL, I QUIT!!!!!!" Benson throws the drumsticks on the ground. "Good riddance!! And don't come back!" Mordecai shouted. Benson slams the door shut. "Dude, we need a drummer! Now what?" Muscle Man asked. "Well..." (Y/n) said, a certain someone coming to mind. Later on the band were practicing. "One, two, three-" Thomas said awkwardly, and the band plays badly. "Hey, hey guys! I think we're gotta scrap Keepin' It Cool."