Using the aid of a clone, the two Kakashi each perform the Lightning Cutter technique on opposite hands. Connecting their techniques together, they form a chain of lightning between themselves that is able to slice through objects such as tailed beasts' chakra arms with great ease. Kakashi was also able to wrap the lightning around a target, thus effectively restraining its movements, as shown against the Demonic Statue of the Outer Path.
When written as '雷電', Raiden means 'thunder and lightning'.
With the "-sama" suffix added, Raiden is another name for the Shintō god of lightning, Raijin (雷神).