So niche. I'm not sure I've heard of this movie... :p
Hi! I'm Frost and welcome to the game and IJ both. It's pretty similar to most journal-style sites, but feel free to ask if there's something you can't figure out!
Anywho, I've got:
MCU Tony Stark - he's very much heard about the where, who and why's of Gamora, and will be interested to meet her. Even if he's sorry to say that her whole team is dust in the wind, so far as he's aware. (rip)
Comics!Clint Barton - Clint is wildly friendly, but a bit of a disaster. He knows a version of Gamora, but would be happy to meet a new version. He can be found wandering around with his dog or in the limited hours coffee shop in town that he runs with Kate Bishop.
Comics!Loki - who is young-ish and a little less prone toward world domination. He's not overly social, but he's got some snark to him and tends to like people who're a little more down to earth, so it's possible they might just get on!
And! Sirius Black, who is from marauder's-era Harry Potter. I think he'll be beyond keen to meet a super badass green woman. Like, how groovy is that?