The Infected Executives are runners of the Infected.
"Caution! Infected executives are very tough and strong."
An Infected Executive is a very dangerous infected that roam the map and run very fast. These infected have more than double amount of health than aged infected. These infected can start to replace infected fresh during late game hordes. These Infected also seem to spawn in large groups near the edge of the map. They cannot be killed by a single blast of Shocking Tower.