The Alpha team is one of the two most powerful teams who is constantly fighting the other one, known as the Omega team. The Alpha team are sworn enemies of Omega. This team wearing white arm bands regularly occupies the base that borders on the field.
Omega team is the other most powerful team who is sworn enemies of the Alpha team. This green band team regularly occupies the deep forest base.
Sigma is a team of rogue outlaws who care not for the ongoing war between Alpha and Omega. Sigma does not occupy a base and their only objective is chaos. Sigma members are known as wild cards and can kill anyone they desire, maybe even their own team. Sometimes, Sigma members have respawns even when the other teams don't. This blue band team is always significantly smaller than the two most powerful teams.