If you don't have Cysero's Golden Cheezburger, then you can't get it. It is already too late. You had to buy Cysero's Golden Cheezburger from shops, such as Cleric Joy's shop, which is in Battleon....
The only way is to get a Cysero Golden Cheezburger.
the class has ..
Yes if they would like the class to have responsibility's.
A class is a collection of similar objects while an object is the individual instance of a class.