An audience i think :)
There is no official fan group of offspring.
Barmy Army or Hooligans.
If you mean Justin Bieber fans, they're called "Beliebers".
They're called 'fans'.
They are called Raiders fans.
People at a concert are called several things:crowdaudienceconcertgoersfans
Fans
An audience i think :)
Dalmatians fans are called "dalmates" =]
After Romeos fans are called the Romeonators or aficiona.
Ed's fans are called Sheerios.