Peter Quill and Jo
Hopefully it wouldn't happen to anyone but Peter was ready to spring into action if it did to hopefully minimize damage and make sure no one squashed Groot out of irritation.
"He's my team, we're family. We even saved the galaxy together a couple of times. And he got to be little saving our lives so I watch out for him." Not that he wouldn't do it anyway because they were family but it was easier to understand.