Head canons

Daughter

Steve:*smugly* So Tony, how does it feel? Being the second smartest person on the planet?

Tony: First, if she wasn't a princess I would hire her... and second, I've always wanted a daughter.

Steve: You see how the second point contradicts the first.

Pepper: You can't adopt every snarky science child you meet.

Tony: I'm taking that as a challenge. Come on kids.

Peter and Shuri:*follow Tony*

Pepper and Steve:*roll eyes*

~Later~
-Shuri's lab-
Tony: This lab is amazing.

Shuri: Let me show you this suit I designed for my brother. *shows 'Research Proposes'*

Tony: You designed that yourself?

Shuri: Yes.

Peter: I stole Cap's shield.

Shuri: Really?

Tony: Yeah. Not even in his new suit either.

Shuri: New suit?

Peter: It has metal legs and an instant kill mode.

Shuri: Why didn't you use that against Thanos?

Peter: Good guys kept getting in the way. Karen kept suggesting it.