Simon (Type D-1) is a type of zombie from the original House of the Dead game. This series was created from subjects who had undergone a significant degree of physical training as evidenced by their toned muscles on their upper bodies. They have flat-top haircuts and the skin from the left arm has been removed entirely as well as a large patch of skin from the left side of the chest.
Simon is somewhat more durable than other zombies like the Sam and Nail series. He attacks by punching opponents or throwing large objects such as barrels.