There is a sub-Boss at the stump at the Impact Site, either a Mamuta or a Goolix. A Mamuta is a gray creature with no head. His only attack is to knock the Pikmin down, then pound them into the ground. When he does this, the Pikmin instantly become Flower Pikmin. A Goolix is a water creature that only Blue Pikmin can attack. Goolix has two parts, a ball and a brain-like part. Attack the ball with a lot of Blue Pikmin to damage it. If a Pikmin comes in contact with the brain-like part, all attacking Pikmin will be blasted away from Goolix.