Hey there! I play a lot of characters and you are welcome to any of them! Here's Freya who I think would have the most in common or the most reason at least to want to get to know Jane! She's not quite from the same universe but she's just found out that she's from their version of Asgard.
I also have Cosima who would be just FASCINATED by everything and have a million questions! For everyone!
As for Marvelverse I have Jean Grey, taken from the Evolution show, so a bit younger and just getting into her powers so has not as of yet run into Thor or Loki and all those.