During "Half-Life 2"s development, various concepts for Combine non-player characters were cut. Female Combine assassins, similar to black ops assassins featured in the first game, were planned but later abandoned, although they appear in the "" arcade game. Another non-player character, the cremator, was conceptualized as a Combine laborer who cleaned the streets of bodies after a battle with an acid gun and although removed from the game, its head was featured in Eli Vance's laboratory. Other cuts included a variety of alien Combine soldiers that would have complemented the trans-human soldiers in the game and a number of synthetic combat machines. Many of "Half-Life 2"s Combine characters went through multiple redesigns; the Combine Overwatch soldier was subjected to at least twelve redesigns before the final appearance was settled on.