Although the Secret Seven has over 30 members , only 7 , wearing masks , are ever seen to take part in active operations at any one time .
Prompted by Vernon - Smith , the juniors form a secret society , the Secret Seven , to fight back .
Although the Secret Seven   has over 30 members , only 7 , wearing masks , are ever seen to take part in active operations at any one time .
Prompted by Vernon - Smith , the juniors form a secret society , the Secret Seven , to fight back .