Steve- He will always come to your room to talk with you and comfort you. Afterwards he will probably take you to get some ice cream. Sometimes Uncle Bucky and Uncle Sam will join you.

Tony- he will let you and your sister stay in the lab with him and help him work on stuff. Or he will have Peter come over to play with you.

Bucky- Bucky will start tickling  you. Believe it or not, his Vibranium arm can actually make you really ticklish.

Natasha- She will tell you stories of all the stupid things your Uncle Clint has done. That will usually put a smile on your face.

Thor- He will eat poptarts with you as you watch Disney movies together.

T'Challa- he is similar to Steve, he will talk to you about what is wrong and comfort you. Sometimes he will let you go hang out with Shuri in her lab for the day.

Peter Quill- He will start playing some music and you two will dance off against each other. Sometimes Groot will join you.