Several Doom 3 monsters, characters, and art designs were cut in the development process and did not make it into the finished game. Originally, id Software first experimented with sculpting and scanning VS modeling but the data was dense and unwieldy, so they abandoned it pretty quickly. Various concept designs of these monsters were shown amongst the pre-release Doom 3 promo material. One of them was a new version of the Arachnotron and Spider Mastermind (seemingly cut in favor of the other new arachnoid monsters Trite and Vagary) while the rest were apparently new designs. Eventually, some of the unfinished monsters were finished and used in the Doom 3 expansion Resurrection of Evil.
Images[]
An Arachnotron concept drawing that was cut from the game.
Spider Mastermind Concept drawing.
An early Hell Knight sculpture.
An unused monster (aka Birdman).
Early Human Sarge & Zombie Sarge revealed at macworld 2001.
Early UAC Marine model. This model is used in the ios handheld game Doom Resurrection.
Early Chainsaw Zombie.
An alternate skinned Trite.
Early Archvile. Later became the Vulgar in Doom 3: Resurrection of Evil.
Concept art of a Cherub.
Early version of a Cherub.
Concept drawing of a Cacodemon.
An unused monster model (aka Cyberorc)
An unused model for an unknown demon. The model and finished textures are still in the game files.