The Flood is a nasty enemy to face. The Flood are an infection that take the form of a big bug. Their whole way of fighting is to infect living and dead bodies that turn into routing zombie-like soldiers. The Grave Mind, a huge beast that has tentacles and a bad temper, controls the Flood. The Flood, after taking over a body, have little armored. There are not easy to kill because they just fall apart instead of dying. Some Flood carry weapons and fire randomly. The also have a Flood type that bulges and explodes like a grenade. Since the Flood infect everybody they come in all forms big and small. An easy way to kill the Flood is with an automatic gun or a flamethrower. In Halo the Flood threatens Earth and needs to be stopped.