Half-Life Wiki


848pages on
this wiki
Add New Page
Add New Page Talk2
HL1 article Safe article logo

The Protozoan is an inoffensive creature seen on Xen.


  • The Protozoan appears as a bluish, transparent rock-like entity orbiting above the ground, with a smaller reddish rock-like shape inside, also transparent and turning on itself. It has no AI, cannot be destroyed and does not react to the player's or any NPC's presence.

Behind the scenesEdit

The "protozoan" (Gr. "prôtos", "first" + "zôon", "animal"), also named "protozoon", actually exists. It covers any of a large group of single-celled, usually microscopic, eukaryotic protist organisms commonly living in water, such as amoebas, ciliates, flagellates, and sporozoans.[1] Protozoa can be plants, fungi or animals. Thus the Protozoan can be considered as an extremely enlarged protozoan that does not live underwater.


  • "Protozoa", the model name, is actually the plural form.
  • When viewing its model in a model viewer, it is completely opaque. Its transparency is achieved in-game.


List of appearancesEdit


  1. Protozoan on The Free Dictionary

Also on Fandom

Random Wiki