HERCs were initially intended to be added in multiplayer in Legacy of the Void, but were scrapped during the beta. HERCs were useful counters for zergling and baneling combos. They were effective at tanking damage from most protoss ground units while other allied infantry units dealt heavy damage. HERCs had a "grapple" ability that enabled them to "grab" an enemy unit and immediately pull themselves to the enemy's locations. Their high hit points and light armor made it difficult for units such as immortals to counter them. However, HERCs were easily defeated by zealots.