Twins los gemelos.

Twins is a slow but powerful zombie with double attack, using half of another infected's corpse as a weapon. It has stats for health, melee damage, critical chance, speed, rage drop and behavior agility/aggression. Twins has gray hair and clawed hands; its "weapon" exposes spinal column and organs. Charisma is -8 with 50m radius; bullet resistance is 90%.

Appearance: Twins is an infected female convict with a corpse weapon, dressed in torn orange prison clothes. She shares a death animation with most female human units and has the slowest speed among non-stationary enemies. Her original ad sprite showed her holding a soldier's body instead of another convict's half. Internally, she had a 5% chance for an unused ability that might have been scrapped during development. Twins used to have one of the highest bullet resistances but this was changed in version 4.1.8 from 95% to 90%.