Infected Male

Former personnel of the base, those poor souls are now mindlessly shambling around in infected rooms... until they notice a fresh victim to spread the infestation further.

Tactics
Male Infected deals no damage by default, but has a chance to enter "enraged" mode. While enraged, he may randomly either do a fast swing (deals massive damage, can be blocked by using Guard command), or calm down, returning to normal state immediately. Despite having context menu with option to harass him, it's of no use: being infected, he's invulnerable to lust.

Being infected with meat parasite, he's very vulnerable to Electric Shock; it lowers his defence by 10% instead of normal 1-3%, and causes guaranteed stun.

Post-combat scenes
Defeat scenes:
 * After defeating Lust Doll in combat, he infect them with a chest parasite.
 * If Lust is already infected with a chest parasite, they would just pass out.
 * Being defeated by him or Infected Female while already having both chest and crotch parasites would result in brain infestation and abrupt Bad End.