Marinette had always known Tom Dupain wasn’t her biological father. She didn’t know that her bio Dad was a supervillain. Cause that wasn’t awkward.
His name was Leonard Snart. He was Captain Cold, leader of the Rogues. She had gone to Central City with the blessings of her parents. Sabine and Tom, just wanted her out of Paris, because while they now knew their daughter was the hero Ladybug. They’d rather she was safe far away.
Marinette had used the horse miraculous to portal to Central city. With Tikki’s luck, she had ended up at a place called Star Labs and had just walked in.
She found a redhead woman and a Hispanic man talking.
“Do you guys not believe in security?” She asked, interrupting their conversation.
Cisco crossed his arms, “Hello small insulting person, did you break in just to tell us that?
“You’re welcome, guy who looks like he’d fit in at a star wars convention,” Marinette smirked. “I’m looking for my dad. Someone told me you’d know where he is?”
Caitlin hummed. Poor thing was lost. “Who’s your dad, sweetie?”
“Leonard Snart,” Marinette said easiler.
“Devi!” Cisco pointed at her. “Spawn of the Satan.” He slammed down a button of the table. “Barry, quick. Snart. Hurry.”
Seconds later, the Flash appeared in the room. “Where’s Captain Cold?”
“We’ll get to that in a second,” Marinette said. “but first, don’t you think you’re taking your leather fetish a bit far.”
Barry just stared at her, “What? I’m the Flash.”
Marinette raised her hands in surrender, “Hey, I don’t want to know what you get called in the bedroom.”
Barry looked around helplessly. Caitlin took mercy on him, “Snart’s her dad.”
He facepalmed. Because, yeah, that explained everything.
An hour later, after Cisco and Caitlin had hunted down his current location and done a DNA test just in case, The flash, and Marinette were outside of one of the rogue’s safehouses. A warehouse repurposed into a home.
A zoom later, they were standing in front of Leonard and Mick.
“What, Scarlet?” Leonard drawled, “No knock.”
“Who the chick?” Mick asked gruffly.
“Name’s Marinette,” She said as she dropped her bag. “Mom’s name was Sabine.” Leonard’s eyes widened at the name. “You guys dated. She got pregnant. Congrats, it’s a girl. I’m here the summer,” She drawled easily. “Oh, yeah, hi dad.”
The men in the room blink at the small girl.
Mick snorted, “Name’s Mick, princess. Don’t touch my stuff.”
“Star labs did a DNA test,” Barry interjected. “She’s yours.
Leonard just narrowed his eyes at her. He had no doubt that Goody two shoes was telling the truth. But still, he was now a dad to a teenage girl. Lisa would never let him hear the end of it.
“Does Sabine-” Leonard started.
“Know you’re a Supervillian,” Marinette interrupted. “Yeah. But Paris is fucked right now. You were the best bet. Where’s my room?” She asked. “Oh, and your supervillain costume sucks. Not as bad as fetish guy over here, but still.”
“It’s a good look,” Lenoard glared. “A Cold classic.” He looked at Flash, who looked far too amused for Cold’s liking. “What? Staying for family dinner?”
“No thanks,” Barry shrugged. “I’d like to keep poison out of my main food groups.”
Leonard chucked and sauntered over to the Flash, “I wouldn’t poison you. You’re too much fun. Might let Mick set you on fire, though.”
“Gee, thanks.”
Their banter went on for another five minutes.
Marinette looked between the two; Captain Cold and the Flash were clearly flirting with each other.
“Yeah, we’re not doing this,” Marinette said loudly, gaining the attention of the room. “You want to bone him,” She pointed from her father to the Flash. “And you,” she pointed at Barry, “totally want in his pants.” She pointed at her dad. “ I have known you both for like five minutes and I can totally tell. But I’m guessing the whole criminal past, and current nemesis things is the way. I’m not going to deal with your unresolved sexual tension. This summer’s going to blow enough as it is. So here’s the deal…” Marinette pointed at the Flash. “You’re name is Barry. I know your secret identity. Tonight, you will show up at an Italian restaurant to be later to decided at 8 o’clock tonight to go on a date with my dad. If you don’t, I will tell everyone who you are.”
Marinette looked at her dad. “You will show up at the same restaurant to have dinner with the Flash. Or I will burn this place to the ground. You will have dinner and dessert. And if you decide to have sex, do it at his place.” She ordered. “Uncle Mick, you’re babysitting. I’m going to find my room.” And with that, she stomped off.
Mick took a swallow from his beer. “I like her,” He said and went back to watching TV. The Firestarter decided he’d get some pretty and shiny for his new niece. One because she was his niece. And two because she’d finally said what both Team Flash and rogues had been dying to for months, “Go Fuck each other already.”
Barry and Leonard stared at each other.
“I heard Romano’s on third is pretty good,” Barry muttered shyly.
Leonard smirked, “Best Tiramisu around.” And Captain Cold decided right then and there, he loved his daughter.
The next morning, Leonard strolled in his hideout with a smirk on his face. He found Marinette eating cereal at the kitchen counter. He paused at her looked over his daughter, who reminded him so much of his himself at that age it was startling. Leonard knew he’d have to keep an eye on her. “Just so we’re clear, I’m in charge.”
Marinette snorted.
Leonard sighed, the summer was going to interesting.
A week later, after Plagg had gotten into Mick’s gourmet cheese.
“You have a magical girl transformation. And you go by ladybug. Leonard groaned. “Ladybug, really?” He shook his head.
An hour later at Star Lab. Captain jabbed a finger at Barry’s chest, “Why does every hero I like think tight red leather is appropriate?”
“Wh-what?” The hero asked.
Barry was so confused.