Undertale Frisk's captured run
 

Frisk had just made it past undyne and to alphy's lab and seeing how kind and sweet frisk was made him perfect for her new plan. Hello is anyone in here? He asked looking around the lab as he entered

Alphys bounces happily as she pressed a few buttons

Hey what are you doing? He asked walking up to her

Alphys jumped and hit the last button as a bunch of robotic coils trapped him

Hey l-let me go please . He started to squirm around trying to free himself

It worked? Yes it worked Alphys smiled

W-what are you going to do with me. Frisk asked looking nervous

Your gonna be the perfect baby for me and Undyne

But I'm a teenager not a baby.

Well now you are she giggled

He was brought to a nursery by the machine

Here’s your new room Alphys smiled

But this is a girly room .

So it’s perfect for you she said

But I'm a boy. He said whining a little bit

Now your a girl she laughed

He was so nervous and embarrassed he wet his pants

Oh good your off to a great start she said

Please just let me go I don't want to be a baby

Sorry no can do she said

He was that put on the changing table

Alphys had the machine strip him down

He blushed and covered his privates

Alphys giggled as they began to diaper him up

Why do you want a teenager as a baby

Cause your so sweet and nice and you’d make a perfect baby cause your small dumb and already losing your potty training Alphys explained

I had a accident so I am a bad wetter after all

Alphys giggled and looked through a wardrobe

He blushed deeply. He struggled with the straps

She smiled and found a grey onesie that said Royal Guard in Training and the seat of it said keeping my diapers safe and messy

Couldn't you just adopt instead of doing this to me

Monsters don’t make messes like humans humans digest and produce a lot more waste making it all the cuter and what makes you so much cuter is how cute your struggling is she giggled

He looked defeated. Fine I'll try it but then you have to let me go

( how do you feel about public humiliation for frisk?)

We’ll see Alphys said having no intention of doing so

(Sounds good to me)

He pouted as he was dressed up

Alphys finished and decided to give Undyne a call

Undyne had just returned home. Hello alphys do you need something

I have a very special surprise for you Undyne Alphys giggled

Oh that is good to hear do you want me to come over or wait until it's ready

Well it’s pretty much ready I’ll need your help to finish it up