Daviiid! I'm only familiar with him from the old New Mutants run (which didn't end well for ANYBODY), but I'm pretty sure they've never met! Doreen hasn't tangled with the X-men crew very much (although she thought she was a mutant when she was a kid), and is only passingly familiar with the Young Avengers gang. They should absolutely meet up and hang out!

... ngl, I just skimmed through your app for David's powers, and if he ever uses them on Doreen, he could totally learn how to speak Squirrelese, she's taught other people the language!