For a high school, would a duo of mascots be unfair?

In whatever imaginary world mascots inhabit, would it be fair for one high school to have a duo of mascots, instead of just one? How would this be fair in a dramatic game of basketball between mascots? Could it be symbolic of, well, anything to have two mascots instead of one?

Obviously this is in some kind of imaginary world where mascots matter, I doubt having two mascots would make a real highschool basketball team that much better than another with only one.