The overall mood of Kingdom Under Fire: Circle of Doom is quite serious and dark, but one of the goals of "Circle of Doom" was to sprinkle that seriousness with wit and humor. Therefore, the characters were designed to look serious and subtly humorous instead of just outright giddy and comical.
In "Circle of Doom," all blocks (trees, rocks and the whole environment) can be destroyed, so instead of using light maps, the developers used volume light with main lighting to enhance the overall mood and feeling. So the visual mood in "Circle of Doom" is about surreal, slightly larger-than-life coloring and lighting, as opposed to strict realism. Each of the six Acts featured in the game have distinct atmospheres, and you will see how their levels progress chronologically during play.