they found you during a mission and decided to become your dads as they saw pentanal in you as a solider and nothing more. but as they walk you back to base they see themselves in you. and even in that 6-8 hour drive back they feel like you are their own kid

you guys make it back to base

Soap:Eyyy- wait why do you have a kid??! they look no older then 14...

Ghost: found them during the mission we think we can make them into an amazing solider

Konig:i nods i feel like they will make an amazing solider.