You can tell Bill is the oldest because he drops everything and comes home to take a desk job back in England when Voldemort comes back. He stops his very exciting job in Egypt to settle back closer to home and help the Order/his family
meanwhile Charlie is like, “…is there a foreign relations component to this illegal organization? I am available through FaceTime if necessary.”
You do also have to think about the fact that Bill probably remembers the first Dark War really well (he was 10 when Harry’s parents were killed). So, yes, him dropping everything to help is very Oldest Sibling energy but also he knows how bad it is about to get.
Realistic family dynamics, lol
















