What is the mascot and cheerleader?

Answer 1

The mascot is the person who dresses up as the team's symbol (ex: tiger, indian, bear, etc.)

The cheerleader is the one who cheers and pumps up the crowd on the sidelines during games and at pep rallies.

The mascot is essentially a cheerleader, but doesn't participate in quite as much in competitions and such. 

Answer 2

A team mascot is a person dressed up in a costume that represents the team's logo. The mascot is represented usually during the game on the sideline in a remake of the team's logo.