Who is the leader in the hunger game?

The movie is called Cato, played by Alexander Ludwig.

Gato is a male professional tribute in Zone 2, and he is the most terrible player. He is vicious, strong, tall, powerful, vain and jealous. Cato hates Katniss because his score is higher than his. He had the only sword in the arena and killed most of the tributes. He even killed suresh in the 1 1 area. Finally, Katniss and Pita joined forces to kill him.