Avatar: The Last Airbender / The Legend of Korra - Mama Korra

Well, they have the necessary parts. So…..

I can imagine what it'd be like if she gets into a fight.

"Oh! You did not just- Bolin! Hold my baby! Momma's gonna teach this guy some manners!"

"W-wait! Korra! I don't-"

Though, I think Bolin and Opal would be the first ones on the team to have kids.