The Forgotten Mammoth is a salvaged and modified GDIMammoth tank. The Forgotten Mammoth is very effective against vehicles, and is armed with an attached saw on its back.
During the Third Tiberium War, some Mammoth Mk. III tanks were eventually abandoned on the battlefield. They were then salvaged by the Forgotten, being modified into the menacing Forgotten Mammoth. These tanks were used to defend the Forgotten's camps, outposts, and bases.
When upgraded, the Mammoths have a shield and can absorb damage.