a ref
The umpire can use her discretion when deciding whether to overrule any call made by a line judge or service judge. The line judges call the shuttlecock "in" or "out," and the service judge calls any service faults committed by the players.
The head referee is actually called the chair umpire. In major tournaments, there are also line judges around the court. Their job is to call a ball if it is out. The chair umpire may overrule the call of any line judge. Also, the chair umpire calls the score after every point.
Badminton
I believe it was simply that there were just better mintons out there and badminton was necessarily BAD but it was just easier to call it that and be done with it.
bat man
Badminton in means of physical reflexes, Call of Duty in means of mental and viewing reflexes.
Yes, no other umpire can overrule a ball-strike call.
birdy
In 'Pro' Shuttlecock or Badminton games there would be an umpire or service judge to 'call' or make the final decision as to whether the shuttlecock fell inside our outside of the court.
A Badminton Birdie
SQUASH, HANDBALL, GOODMINTON, and BATTLEDORE AND SHUTTLECOCK all preceded THE GAME WE NOW CALL BADMINTON.
Officials and appealsThe referee is in overall charge of the tournament. The umpire, where appointed, is in charge of the match, the court and its immediate surrounds. The umpire shall report to the referee. The service judge shall call service faults made by the server should they occur. A line judge shall indicate whether a shuttle landed 'in' or 'out' on the line or lines assigned. An official's decision is final on all points of fact for which that official is responsible6 officials4 line jugdes1 umpire1 service judge