Ewok Handlers were footsoldiers for the Zann Consortium. They were armed with Gaffi sticks and thermal detonators, and also had sacks that they dragged around with them. When they saw Ewoks during a battle, they would capture them, strap thermal detonators onto their head, stuff them in bags and keep them for groups of enemy soldiers on foot. If they saw a group of soldiers they would take an Ewok out of the sack and send it back into battle, and as soon as the Ewok reached the group of enemies, the detonator would explode with devastating effect.
Behind the scenes
Ewok handlers look similar to the the rancor-handler Malakili from Return of the Jedi. It is unknown if this is meant to imply a connection to the Circus Horrificus, the organization to which Malakili once belonged. In Galactic Conquest mode in Forces of Corruption, Ewok Handlers can only be recruited if Endor has been corrupted with slavery.