Sharrash is a mysterious and well-organized community of mutant rats endowed with inhuman intelligence. They live underground, in tunnels and canals of the destroyed cities, along with degenerate humans and mutants who serve the Sharrash. They do not allow strangers anywhere near them and fiercely defend their nests, and their fighters will not hesitate to give their life for the pack.

The main advantages of the Neuroshima Hex! Sharrash army are mobility of HQ, the ability to blow up even the fastest enemy units and to paralyze the slower ones, and the possibility of bypassing the enemy's defense lines thanks to the mortars. Another advantage of the Sharrash is a difficult to eliminate Foundation Tile (Hole), which can easily thwart the enemy's plans.

Sharrash's disadvantage is a smaller number of fighting units than in other armies, their low mobility, low toughness and initiative, as well as a complete lack of armors.