Ramblers appear right at the beginning of the game, all the way to the end. At night they flood the streets of the city in huge numbers. They often appear to be almost human, except with added bulk, pale yellow skin, hair loss and the occaisonal bony growth emerging from their backs.
Ramblers are very weak when alone or when in small numbers, and present little threat. Individually they can be dispatched by virtually any means. Although like all freaks, they have a slight resistance to conventional firearms, but this is only a problem for Agents who have a low level in firearms. However, they often swarm in large numbers, and can overwhelm careless players. UV weapons will cut a swathe through them, resulting in instant kills. Agents with good explosive skills can also easily use grenades and rockets to kill large groups. High strength agents can also chain melee attacks together, which is also a good way of combating large groups.