Lashers appear in cell block six of the Stryker's Island Penitentiary Hard Mode Alert, in the Meta-Powered Inmate's solitary confinement area, between the main cell block and the point where the Rogues obtain their confiscated gear.
The characterizing attack that the Lashers use is a ground/pull/root. The distance is comparable to that of any ranged weapon, making most ranged attacks useless, and all ranged attacks short-lived. The length of the root time is relatively very long. Binding their enemies gives an opportunity for other Penitentiary inmates to cause damage, since their own damage after binding is rather low. Running away will immediately cause a player to be pulled back and bound again, with another large hit of initial damage. They are vulnerable to close-range attacks, with melee attacks and weapons doing the most damage.