The single graphic scene in the show is when a genetically engineered monster (i.e. non-human entity) is seen biting into a man's abdomen. Although no gore is present, there is a substantial amount of blood as well as injury detail. Fortunately, the man is saved and survives his injuries. (We briefly see this event happen again later on in a flashback, which is black and white.)
Overall, there is frequent action-adventure violence involving a wide range of bombs, guns, and bladed weapons. Fights are presented in a stylized manner and are accompanied by little or no red blood. The deaths of some non-human entities are accompanied by some discoloured blood (i.e. yellow or white goo).
Violence almost always involves blood, but only one or two scenes are graphic.