The Slammer is one of Ed's items and the first item he acquires.
The Slammer, at first glance, is a baton-like object with points at both ends. When used by Ed, the Slammer can extend, creating a blue, whip-like energy. Ed can use the Slammer as a weapon by simply hitting enemies with the Slammer, but he can also use it to grab enemies. The Slammer has the ability to generate large amounts of energy and is often used to activate machinery related to Ed's genetic makeup.