The heroes (player controlled characters):
The Vanguard is the frontline hero, specialized in assault.
He can use his melee attack to quickly slash enemies. His burst ability allow him to travel faster for evade a fight or rush enemies
The Engineer is the support hero specialist.
He can repair every structures or deployable deeds and accelerate the capture event. He can also setup personal turrets to defend a place.
The Commander is the logistic hero specialist.
He can control and optimize the units IA. He can also throw grenades do hit many enemies at once.