Marauders x reader oneshots

Young!sirius black x reader

Baby
You and Sirius are already dating

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No ones Pov

Everyone knows Sirius loves two things the most and one of them is y/n y/l/n. Sirius loves to use like the pet names , "babe" or "baby/my baby" and "love".

James PoV

I've decided I want to pull a prank on Sirius after he poured paint over me and lily last week.
"REMUS" I shout as I walk into the dorms. "Merlin James no need to shout. What do you want now" he says no looking up from his book. "I need your help" I reply sitting on the end of his bed. "What with now." He questioned rolling his eyes. "Well I" I start but was cut off by Remus"I'm not helping you with any pranks on people." "But Remus this one is on Sirius" I whine. "I suppose if it's on Sirius it's a different story so go on" he says putting his book down. "So I wanna prank Sirius so I was thinking" I start "that's a first" I hear Remus mutter. I ignore him and carry on "so as I was saying. I was think, what does Sirius love the most." "Oh no" Remus mumbles. "Y/n that's one of the things he love the most. Sirius has them pet names for her so I was thinking maybe you can help me brew a baby potion." I said giving Remus a pleading look. "Fine as long as I don't get in trouble for it and you take the blame" he says. "Deal" I say.

The next day

Remus had finished making the potion and put it in a bucket with water. (Idk just go along with this) We put the bucket above our dorm door and Remus hid in the bathroom.

I walk into the common room and y/n was sat reading. "Hey y/n" I say sitting next to her. "Hey what's up" she asks calmly. "Remus said he needs your help he's in the dorm room" I say and she nods and walks upstairs. I grin spreads across my face I slowly make my way up to the dorm and I hear a splash.

I walk upstairs and see a baby. I chuckle a little and Remus comes in and a smirks. He looks at me. "Padfoot is gonna kill you" he said. "I know" I say. I pick her up. "But look how cute she is" I coo and place her on Sirius bed. "I'll stay here and you go downstairs to wait for Sirius." Remus says. I nod and head downstairs.

Sirius PoV

I walk into the common room and I see James with a proud smirk on his face. "Hey prongs." I say suspiciously. "Hey" he replies. I look around. " have you seen y/n" I ask. "She's up in the our dorm helping Remus with something" he replied his smirk growing bigger. "James what have you done?"I questioned. "Nothing" he replied. I nodded my head slowly and walked up to the dorms. I open the door and Remus sat there with a baby on his lap.

"Is that who I think it is?" I asked anger growing inside of me. "Your girlfriend?" Remus questioned. "PRONGS" I shout and the bay started crying. I walk in the dorm room and James followed me. "Did you turn my girlfriend into a baby!" I exclaim and he simply nods. "DUDE NOW I LOOK LIKE A PEDO" I yell and y/n baby cry's more. "Can we stop yelling" Remus says bouncing the baby. "Here Sirius it's your girlfriend" Moony says passing me y/n baby. She stops crying and starts to laughing playing with my hair. My Sirius (😏) face flattened and a smile pulled my face. I place her on my bed and turn to the others "when does this wear off" I ask. "Midnight" Remus replied sitting on his bed.

A knock at our door caught our attention. Y/n baby let out a scared noise so I pick her up and she starts playing with my hair again. James opens the door and lily walks in. "I heard shouting an- oh merlin" she says looking at me with baby y/n. "Sirius?" She questioned. "Right this is James fault he turn y/n into a baby!" I exclaim. She giggles. "Look how adorable she is" she says in a baby voice. "James your so lucky it's the weekend because if it wasn't you would have to carry a baby around school with you" I say through gritted teeth. "It will be Lunch soon so what are we gonna do" lily says. "I think they should bring food from the kitchens up here" I suggest. I hear baby y/n squeal. I set her back down and she does grabby hands towards me "noooo" she whines and I playfully roll my eyes and sit on the bed and place her on my lap. "Ok me and James will go and get food from the kitchens" Remus said.