Overshields are a powerup in the Halo series. They give you double the shields,and give you a Glowing attribute. They are also called NoobCubes. They are also confused with Active Camoflauge which give you invisibility. They are even confused as a Custom Powerup. In Halo 3's forge mode; you can customize the traits it gives to you. The Overshields have been completely changed in each game.