Natasha Romanoff/ Black Widow

It was Christmas Day and you went to an orphanage with Natasha. You had wanted to adopt a child for a while now and thought that Christmas would be the perfect time to do it. You went to an orphanage to pick out a child. There were kids of all ages playing together but one little girl in particular caught your eye. She was about seven-years-old with long red hair and sitting all by herself.

"Hi sweetie. What's your name?" you asked.

"Anastasia," she said in a quiet voice.

"Would you like to come home with my wife and me?" Anastasia shied away from you a little.

"I promise we'll take good care of you," you smiled. As you were talking to Anastasia, Natasha could see how smitten you were. She went over to talk to the matron to see about adopting the little girl.

"You want to adopt Anastasia? Oh, that poor little girl. She was out with a friend and came home to find her family had been in a terrible accident. She's been afraid to go out ever since." Nat's heart went out to her. She filled out the forms and after a lot of convincing on your part, you ended up taking Anastasia home with you. It was the best Christmas present you could've given the little girl.

...

Bruce Banner/ Hulk

You and Bruce had wanted a baby for so long but you knew you couldn't conceive one so you had decided to adopt. You chose a young woman that was in her second trimester and got to know her quite well in the last remaining months. Unfortunately when she went into labour, Bruce was out of town when she went into labour but you were there to guide her and to hold her hand. Bruce got home as fast as he could; arriving one hour after Robert William was welcomed into the world. You handed him over to Bruce and he looked down at the tiny boy in awe.

"Thank you so much for this," you smiled, teary eyed.

"You're very welcome. I'm just glad my baby is going to a good home and he'll be well cared for." After filling out all the paperwork, you were finally able to take home your child.