The last time the Avengers were called to assemble, they fought a horde of giant squids in Manhattan. (And really, what is it with all the giant sea creatures?) The people of Manhattan were none too happy to be footing the bill for repairs yet again. Knowing this, Pepper and Phil decided to create a fundraising event sponsored by Stark Industries that would raise money for repairing the city. It just so happened that the event was a concert featuring the talents of the national show choir champions, who just happened to be able to participate for a good cause.

The glee club was left to put their whole set list together for the whole show, and the decided to have fun with it.
"Hey! Why don't we sing songs that could be attributed to the Avengers? I bet the audience would get a kick out of that!"
"Like what Finn?"
"We'll, like Secret Agent Man could refer to Phil."
"Or Zero to Hero could be Steve!" Rachel added.
"I think Maneater could work for Natasha."
"Oh and definitely U Can't Touch This."
The group continued hashing out their set list and managed to come with 10 numbers to perform. They decided to start off with We're All In This Together, since it's the kind of song that people would be expecting from a show choir. They would then transition to Zero to Hero sung by the girls then Maneater sung by the guys. Secret Agent Man would be sung by Finn and Puck, It's Not Easy Being Green by Quinn and Kurt, and Titanium by Rachel. Artie would take the lead on U Can't Touch This, while Santana and Blaine would sing Rockin' Robin. The group would all take the stage for Super Friends (a song brought to their attention by Sam from an online Batman musical) and they would close with Mercedes leading We Are Family.

The streets were packed. The concert was held on the street in front of Avengers Tower, and there were tons of people littering the street. New Directions took the stage after a quick introduction from Pepper. Before they began their first song, they noticed the Avengers sitting in the front row. They quickly made bets to see how long it would take them to realize the songs were about them. The first number went smoothly, and the boys exited the stage so the girls could do the next number. They had decided to use costumes, so for Zero to Hero they were all wearing various red, white, and blue clothing. While they were singing, the group kept a close eye on the Avengers' expressions. They were all smiling, though none of them seemed to cotton on. The boys took the stage in all black with red ties for Maneater. Still, none of the Avengers seemed to realize what they were doing, though Phil looked like he was in deep thought. Everyone but Finn and Puck exited the stage for the next song while Finn and Puck put sunglasses and Bluetooth earpieces in. During the song, they noticed Clint smiling and chuckling. He knew what was going on, meaning Santana won the bet. She had bet that Clint would be the first to figure it out.

Kurt and Quinn came onto the stage wearing head to toe green. When the music started up, Tony couldn't hold in his laughter. Bruce turned a nice shade of red by the end of the number, as did Pepper from holding in her laughter. Rachel took the stage in a stunning red and gold dress as the piano started playing. She smiled at Tony, seeing his smirk, and began singing. By the end, Pepper was quietly crying. By then, everyone but Thor realized the theme for the songs being performed. After Titanium, Natasha leaned over to Thor to explain what was going on, and what person each song was about. At the start of the next song, Thor asked her who it was about. Clint leaned over her to happily tell him that it was about him. Thor took another look at the costumes the performers were wearing. It seemed to be some kind of red baggy trousers and shiny silver shirt. Now that he thought about it, it reminded him a bit of his armor. Santana and Blaine took the stage next, wearing black and purple. Santana smirked at Clint while Blaine gave him a big smile. They started singing, and every one of the Avengers minus Clint laughed. Tony laughed so hard that he was tearing up. Natasha had the biggest shit-eating grin on her face, Steve was trying to hide his amusement behind a hand, Bruce was shaking with laughter, and Phil was even smiling. Clint sat there and groaned. He bet Santana chose this song.

When Clint's embarrassment was over, Blaine and Santana exited the stage. The rest of New Directions came onto the stage in various costumes. They each took a turn to introduce their alter-ego while Blaine and Santana changed. They introduced themselves as Gold Star, Blackbird, The Human Brain, Tarantula Head, Asian Persuasion, The PuckerMan, Dr. Y, The Treble Clef, Blonde Chameleon, Sweet 'n' Spicy, The Diva, Leprechaun, HBIC, Bubble Toes, Snixx, and Nightbird, the nocturnal Avenger. The Avengers all laughed and cheered when they were done introducing themselves. Some of their costumes were actually pretty good. They introduced the song as being from an online musical about Batman. They began the song, which none of the Avengers recognized, but some audience members did. Even if they didn't recognize the song, it was obvious that it was about the Avengers and it was a lot of fun to watch. The song ended, and they quickly transitioned to the next song. Mercedes led the group in We Are Family, inviting the audience to join in and the Avengers to come on stage. They joined New Directions on stage for the rest of the song, singing and dancing along with them. After, they said their thank yous and exited the stage. The crowd was still cheering and calling for an encore a few minutes later, so New Directions returned to the stage donning Empire State shirts and hats. The encore song started, and the crowd cheered. Halfway through the song, the Avengers joined them on stage in the same Empire State shirts, singing and dancing with New Directions. They finished the song, took bows, and left the stage.

Backstage (which was the lobby of the tower), New Directions were in their post-performance high phase and the Avengers were left watching them. Suddenly, Clint spoke up.
"Rockin' Robin? Really? You couldn't do Blackbird or something?"
The group laughed, "nah, that's Kurt and Blaine's song."
"Good job choosing Bruce's and Steve's songs," Tony told them.
"Rachel and Kurt picked them."
"Who came up with the others?"
"Finn thought of Secret Agent Man, Blaine mentioned Maneater, Artie picked U Can't Touch This, Sam got that song from the Batman musical, Quinn thought of Titanium, Santana came up with Rockin' Robin, and we all thought of We're All In This Together and We Are Family. "
"I knew Santana picked it," Clint groaned while everyone laughed.
"So, Blackbird and Nightbird, huh?" Tony asked, looking at Kurt and Blaine. "Those seem to go together."
The two boys blushed and smiled.
"So what did you guys think of your songs?" Rachel asked.
"You were amazing," Steve told them. "What was that second song from?"
"The Disney movie Hercules. I-um-thought it would work for you."
"No kidding. But thank you for not singing The Star-Spangled Man with a Plan."
"What?" Santana asked with a smirk.
"Never mind."
"What is that song that speaks of hammers?" Thor asked them.
"The original singer is called MC Hammer," Artie told him. "That's why he says Hammer time."
"Aye, I thought it was a great tune." Thor said as he nodded in approval.
"I liked my song," Natasha said with a smirk. "As well as Coulson's."
"We thought they were fairly appropriate," Blaine told them with a smile.
"You know my suit isn't made of titanium, right?" Tony interjected. "It's also not iron, contrary to popular belief."
"We know. But the song fit. And really, you are bulletproof in that thing," Quinn told him. "It was either that or a Justin Bieber song that Brittany suggested."
Tony shuddered, "Good call."
"It Isn't Easy Being Green?" Bruce asked quietly.
"We didn't want to sing about anger, so we went with that."
"Understandable."
"So what is that Batman musical song?" Coulson asked.
"It's a really cool musical!" Sam said, excited. "It's a parody put on by a theater group that was formed by college kids."
"Was it any good?"
"It was awesome! We should watch it sometime. They also did a few parody musicals about Harry Potter and a couple of original musicals. One of them is about alien bugs in space..." Sam continued on.
"JARVIS pull up the musical Sam's talking about and order some pizzas," Tony said. "Let's go and see how good this musical really is. Pfft, Batman. There should be an Iron Man musical." Tony mumbled to himself.

A/N: That's it! That's the last part of this that I have planned. If I have other ideas, I may add more, but most likely not. Thanks for reading! I apologize for any errors, since I'm too lazy to read through to check it. But, at least I used spell-check this time!

I have a playlist for the songs used here and in Chapter 5 here: youtube()com/playlist?list=PLZav1NNZdYAT-j-SkOVmJqNeN1ZCtIZes **replace the () with .

I also couldn't help but add some reference to Starkid because that song works so well for the theme that New Directions is going for. And Sam would totally know about everything Batman.