The amount of psychic damage I'm taking from the tag "Bruce Wayne Muppet Threesome" is not insignificant, but I suppose I had it coming.
Also, because I might as well ride this crackfic into the Lazarus Pit:
The Muppets eventually do make a film with Gotham in it. The premise starts not unlike the other Muppet movies, where the Muppets are fractured, and Kermit is trying to get the gang back together. For this, he must travel around the US, finding the location of the other Muppets.
When the time comes to find Miss Piggy, the screen cuts to Wayne Manor, the other Muppets standing outside the imposing iron gates.
"Well, we tried," Rizzo intones nasally, already walking off. Gonzo catches him around the neck, hauling him back.
"Home! What, you think she's going to leave Bruce Wayne?"
Kermit's face goes through numerous stages of grief before squaring into the kind of grim determination that can only happen when you have a fist for a jaw. "We have to try," the Frog affirms, then stoically presses the gate buzzer.
The scene cuts to inside the manor, where Miss Piggy is shown lounging on an opulent chaise, surrounded by immense wealth and luxury. Empty bottles of champagne everywhere and an inordinate amount of food. It's clear there was a party last night. She is dressed not unlike Debbie from the Addams family, her face covered by a fluffy pink eyemask embroidered in gold thread that reads "Wake Me In Paris" in gaudy, swirling font. In the background, a picture of Bruce Wayne and Miss Piggy can be seen on a table. The frame is neon pink and shaped like a heart. Bruce looks happier than he's ever done in his entire life. (Probably because he couldn't stop cracking up when it was being taken.)
There's a knock at the door, and she wakes with a snort, ripping away the eyemask. "What?" she demands harshly before correcting herself into a more ladylike twinkle. "I mean, who is it?"
Alfred appears as firm and imperious as ever. Perfectly straight-faced. "Forgive me, madame, but we appear to have a common rabble at the door."
"So? Release the hounds. Brother, do I have to think of everything around here?"
Alfred clears his throat, the slightest twitch of a smile on his face. It's gone before the camera can narrow in on it. "It appears they are friends of yours, madame. Ah, one Mister Kermit the Frog and, um, associates."
"Kermi!" she exclaims before she can stop herself. "I mean, uh, very well, send them in."
The Muppets traipse into the opulent room, googly eyes roaming everywhere in astonishment. "Wow," Gonzo breathes.
"Food!" Rizzo exclaims, lunging toward the comestibles and shoving his face into a bowl.
Gonzo hauls him back, glancing at Alfred apologetically. "Sorry.
But Kermit only has eyes for Ms Piggy. "You look well, Pigathia," he says solemn and sincere.
"I do? I mean, of course, I do." She harumphs, turning her back on him. "How could I not? I'm only the wealthiest pig in the world." She turns back, expression coy over her shoulder. "What do you want?"
"Well, we're trying to get the old gang back together. Our old theaters being shut down, and I just thought that maybe one last show might--"
"That's why you're here. For the show?"
Kermit takes a deep, shuddering breath. "No. That's not why I'm here. Gosh darnit, Piggy Lee, I want you back. I love you, and I know deep down" -- "way down," Rizzo supplies before getting elbowed -- "that you love me too."
She turns slowly. As though drawn by some invisible string. Her expression falls. "I do. I did. Once upon a time. But Kermi... Bruce takes care of me."
She carries on as if the others hadn't spoken. "I know you love me. But I also know I'll only ever be second best to the show. With Bruce," she sighs dreamily. "He's rich, handsome, and most importantly, dumb as a rock. I'm the most important pig in town. I'm practically running the joint. You really think I'm going to give up all this." She gestures around the grandeur. "For a penniless Frog who can't see past the next show?"
"Well..." Kermit hesitates, face falling. "Yes. I guess... I guess I did."
Gonzo and Rizzo share a look. "I think we better go," Gonzo says, placing a consoling hand on Kermit's shoulder. "Come on, guys. It was nice seeing you again, Piggy."
"Yeah, real nice," Rizzo intones, shoving as much food into his pockets as his little rat hands can grab.
Kermit shakes himself. "No. I refuse to believe it! This isn't you, Piggy Lee. You might think it is, but it isn't. All this wealth, the silk robes, the fancy food. I know you, Piggy Lee; I know you better than anyone, and you're not this shallow. You're a performer, a star. You were made to be loved by the stage. Not just some... some billionaire playboy who can give you whatever you want whenever you want. I have to believe that because otherwise, what the heck has it all been for? What have we been for? So what do you say, Pigathia? Will you come home? Come back to the show where you belong. For me?"
There's a long, heavy pause, and Miss Piggy sighs.
The following scene cuts to the Muppets flailing down the Wayne Manor driveway, yelling comically as several snarling rottweilers chase them.
"And stay out!" Miss Piggy yells after them. When she turns back to Alfred, she resumes her ladylike poise. "Alfie, be a dear and tell Brucie I'll be home late tonight. Mama's got some shopping to do."
She eventually shows up at the Muppet show at the last minute to save the day, a happy, bumbling Bruce tagging beside her. Later, when the Muppets are all on stage, the human protagonists, who are in the audience and seated next to Bruce, remark, "Wow, I can't believe they raised the money to save the theater!"
"They didn't," Bruce says with a small, knowing smile. His gaze turns to Miss Piggy adoringly, sighing wistfully. "But I just can't say no to that pig."
Henceforth it becomes Muppet canon that Miss Piggy and Bruce Wayne are in a heated on-again-off-again relationship. Neither Kermit nor Bruce seems to mind each other, leading to an episode of Sesame Street several years down the line where Elmo explains that sometimes a child can have one mommy and no daddy, or one daddy and no mommy, or have one daddy and one mommy, or two daddys and no mommies or vice versa, and sometimes if you're the Wayne kids, a daddy, a frog, and a pig.
Bruce will never live it down, but it's worth it. Letting the Muppets into his life is possibly the best longcon of his life. Who the fuck is going to believe he's Batman now? No one. Not even the butts matching can hold up to him being Miss Piggy and Kermit's sidepiece.